Question

6) Interpreters (may/must) translate without dictionarise. 7) (Can/may) I use me your bike for today? 8) We (may/ought to) reserve a table in advance if we want to have dinner there. 9) When they finish (to eat/eating) their lunch , they'll go to the office. 10) I am planning (to visit/visiting) my granny next week.

Answer 1

6 must   7 May 8 ought to 9 to eat 10 to visit

Answer 2

I will answer in detail. 6) Interpreters (may/must) translate without dictionaries. 7) (Can/may) I use your bike for today? 8) We (may/ought to) reserve a table in advance if we want to have dinner there. 9) When they finish (to eat/eating) their lunch, they'll go to the office. 10) I am planning (to visit/visiting) my granny next week.

6) The correct modal verb is must. Interpreters must translate without dictionaries. This means that it is an obligation or a necessity for interpreters to translate without using dictionaries. The modal verb may would imply that it is a possibility or a permission for interpreters to translate without dictionaries, which is not the intended meaning. You can learn more about the difference between must and may [here](https://www.grammarly.com/blog/modal-verbs/).

7) The correct modal verb is may. May I use your bike for today? This means that you are asking for permission to use someone else's bike for today. The modal verb can would imply that you are asking about your ability to use someone else's bike for today, which is not the intended meaning. You can learn more about the difference between can and may [here](https://learnenglish.britishcouncil.org/grammar/english-grammar-reference/modal-verbs).

8) The correct modal verb is ought to. We ought to reserve a table in advance if we want to have dinner there. This means that it is advisable or recommended to reserve a table in advance, because the place might be busy or full. The modal verb may would imply that it is a possibility or a permission to reserve a table in advance, which is not the intended meaning. You can learn more about the difference between ought to and may [here](https://english.lingolia.com/en/grammar/verbs/modal-verbs).

9) The correct form is eating. When they finish eating their lunch, they'll go to the office. This means that they will go to the office after they have completed the action of eating their lunch. The form to eat would imply that they will go to the office in order to eat their lunch, which is not the intended meaning. You can learn more about the difference between to eat and eating [here](https://www.grammar-monster.com/glossary/modal_verbs.htm).

10) Both forms are correct, but they have slightly different meanings. I am planning to visit my granny next week. This means that you have a specific plan or intention to visit your granny next week. I am planning visiting my granny next week. This means that you are in the process of making a plan to visit your granny next week. You can learn more about the difference between to visit and visiting [here](https://grammar.cl/english/modal-verbs.htm).