Помогите ,пожалуйста

Task 1

A5, B1, C3, D2

Task2

1. must

2. ought to/should

3. don’t need to

4. could

5. am able

6. are able to

7. could

Task 3.

1. should

2.ought to

3. was able to

4. need not

5. was able to

6. must

7. need not

8. must not

Task 4.

1. have you?

2. aren’t there?

3. shall we?

4. will you?/won’t you? возможны оба варианта

5. is there?

6. will you?/won’t you? возможны оба варианта

7. can it?

8. aren’t I?