Question

1. It is a very busy road so you «must/don’t have to» cross carefully. 2. We were late for our flight, so we «had to/could» take a taxi.3. You «mustn’t/don’t have to» go to the theatre to buy the tickets – you can buy them online.4. You «don’t have to/ could» carry cash with you, they accept credit cards everywhere.5. I missed my train, so I «can/had to» wait for the next one.6. You «shouldn’t/ have to» go out tonight. You have your exam tomorrow!7. I am sorry. I «can’t/mustn’t» come to your party on Saturday. I will have to help my granny.8. I think London is a fantastic city. You «should/shouldn’t» visit it one day!9. You «can’t/ must» be 16 or older to see this film.10. When he was young, he «could/have to» play tennis very well.11. If you study hard, you «will be able to/have to» pass your exams with good grades.12. I like this room because you «can/must see» the lake from the window.13. You «can’t/must» swim in this river, it is very dirty.14. I am afraid, I don’t have enough money to go by plane, so I «will have to/will be able to» go by train.

Answer 1

1) must
2) had to
3) don’t have to
4) don’t have to
5) had to
6) shouldn’t
7) can’t
8) should
9) must
10) could
11) will be able to
12) can
13) can’t
14) will have to

Answer 2

1. It is a very busy road, so you must cross carefully. When the sentence says "you must cross carefully," it means that it is necessary for you to be cautious and pay attention while crossing the road because it is busy. The use of "must" indicates that it is a requirement or an obligation for your safety.

2. We were late for our flight, so we had to take a taxi. In this sentence, "we had to take a taxi" implies that there was no other option available to reach the airport on time. The use of "had to" indicates that it was necessary or obligatory to take a taxi because they were running late.

3. You don't have to go to the theatre to buy the tickets – you can buy them online. The phrase "you don't have to go to the theatre" suggests that going to the theatre is not necessary or mandatory to buy the tickets. Instead, you have the option to buy them online. The use of "don't have to" indicates that there is no obligation or requirement to go to the theatre.

4. You don't have to carry cash with you, they accept credit cards everywhere. In this sentence, "you don't have to carry cash with you" implies that it is not necessary or obligatory to have cash because credit cards are accepted everywhere. The use of "don't have to" indicates that there is no requirement or obligation to carry cash.

5. I missed my train, so I had to wait for the next one. When the sentence says "I had to wait for the next one," it means that there was no other option available after missing the train. The use of "had to" indicates that waiting for the next train was necessary or obligatory under the circumstances.

6. You shouldn't go out tonight. You have your exam tomorrow! The phrase "you shouldn't go out tonight" suggests that it is not advisable or recommended to go out because you have an exam the next day. The use of "shouldn't" indicates a suggestion or advice against going out.

7. I can't come to your party on Saturday. I will have to help my granny. In this sentence, "I can't come to your party on Saturday" means that it is not possible for the speaker to attend the party. The phrase "I will have to help my granny" suggests that there is an obligation or responsibility to assist the speaker's grandmother. The use of "can't" indicates a lack of ability or possibility to attend the party.

8. I think London is a fantastic city. You should visit it one day! When the sentence says "You should visit it one day," it means that the speaker believes it would be a good idea or recommendation for the listener to visit London at some point. The use of "should" indicates a suggestion or advice to visit the city.

9. You can't be 16 or older to see this film. In this sentence, "You can't be 16 or older" means that it is not allowed or permissible for someone who is 16 years old or older to watch this film. The use of "can't" indicates a restriction or prohibition.

10. When he was young, he could play tennis very well. When the sentence says "he could play tennis very well," it means that in the past, he had the ability or skill to play tennis at a high level. The use of "could" indicates past ability.

11. If you study hard, you will be able to pass your exams with good grades. In this sentence, "you will be able to pass your exams with good grades" suggests that if the listener studies hard, they will have the capability or opportunity to achieve good grades in their exams. The use of "will be able to" indicates future possibility or capability.

12. I like this room because you can see the lake from the window. When the sentence says "you can see the lake from the window," it means that it is possible or achievable to have a view of the lake from the room's window. The use of "can" indicates the ability or possibility to see the lake.

13. You can't swim in this river, it is very dirty. In this sentence, "you can't swim in this river" means that it is not allowed or advisable to swim in the river due to its dirty condition. The use of "can't" indicates a restriction or prohibition.

14. I am afraid I don't have enough money to go by plane, so I will have to go by train. When the sentence says "I will have to go by train," it means that due to a lack of sufficient funds, the speaker has no choice but to travel by train. The use of "will have to" indicates a necessity or obligation due to the circumstances.