Answer:
2. A. would have to take
3. B. is
4. D. ought to
5. C. needn't have done
6. A. should send
7. C. is to, will have
8. B. mustn't
9. C. ought
10. C. can be done
11. B. will be able
12. C. might be
Step-by-step explanation:
I have been able to fill the empty spaces with the correct answers.
We see the use of modal verbs in the sentences. Modal verbs are known to be auxiliary verbs that actually express the mood of another verb. These modal verbs are actually used to show possibility, speculation, deduction, prediction, etc.