Question

Use "must," "mustn't," "needn't," "have," "should," "shouldn't": -- Well, kids, this is Kelly, your baby-sitter for the time we're away. You 1)... be nice to her. Dad and I are sorry we 2)... leave you for a month, but we really 3).... -- Hi, you 4)... be Sam, and this 5)... be the little Nancy. -- Oh, you 6)... be so noisy. Come, Kelly, we 7)... show you around the house. You 8)... do a lot of work. The only thing you 9)... do is feed them on time and look after them during the day. -- 10)... I go shopping? -- No, you 11)..., we have a housekeeper and a maid. -- 12)...I wash up? -- No, you 13)..., you 14)... do any work about the house. -- What time 15)... I come in the morning? -- You 16)... come at 9 and stay till 5, but you 17)... be late in the morning, and you 18)... allow Sam to stay out in the garden long You 19)... be firm about it. If anything goes wrong, you 20)... phone us -- You 21)... worry, I'll do my best.

Answer 1

1)should
2)must
3)needn’t
4)should
5)should
6)shouldn’t
7)have
8)need
9)must
10)should
11) shouldn’t
12) should
13) shouldn’t
14)must
15)need
16)must
17) shouldn’t
18)must
19) have
20) should
21) shouldn’t

Answer 2

Certainly! Let's go through the sentences and fill in the blanks with the appropriate modals.

1) You must be nice to her. - Use "must" to express a strong recommendation or obligation.

2) Dad and I are sorry we must leave you for a month, but we really have to. - Use "must" to express obligation, and "have to" is also a suitable option in this context.

3) You needn't worry. - Use "needn't" to express lack of necessity or obligation.

4) Hi, you must be Sam, and this must be the little Nancy. - Use "must" to express a high degree of certainty or assumption.

5) Oh, you mustn't be so noisy. - Use "mustn't" to express prohibition or strong advice against doing something.

6) Come, Kelly, we must show you around the house. - Use "must" to express obligation.

7) You mustn't do a lot of work. - Use "mustn't" to express prohibition.

8) The only thing you have to do is feed them on time and look after them during the day. - Use "have to" to express obligation.

9) You needn't do any work about the house. - Use "needn't" to express lack of necessity.

10) Must I go shopping? - Use "must" to ask about necessity or obligation.

11) No, you mustn't. We have a housekeeper and a maid. - Use "mustn't" to express prohibition.

12) Must I wash up? - Use "must" to ask about necessity or obligation.

13) No, you needn't. You shouldn't do any work about the house. - Use "needn't" to express lack of necessity, and "shouldn't" to give advice against doing something.

14) What time must I come in the morning? - Use "must" to ask about necessity or obligation.

15) You must come at 9 and stay till 5, but you mustn't be late in the morning, and you mustn't allow Sam to stay out in the garden long. - Use "must" to express obligation, and "mustn't" to express prohibition.

16) Must I come at 9 in the morning? - Use "must" to ask about necessity or obligation.

17) No, you needn't, but you should be on time. - Use "needn't" to express lack of necessity, and "should" to give advice.

18) You mustn't allow Sam to stay out in the garden long. - Use "mustn't" to express prohibition.

19) You must be firm about it. If anything goes wrong, you must phone us. - Use "must" to express obligation.

20) You mustn't worry; I'll do my best. - Use "mustn't" to express prohibition or advice.

I hope this helps! Let me know if you have any further questions.