EX 1

1 will be able to

2 can 

3 can you

4 can't dance

5 couldn't

6 will he

7 mustn't

8 didn't must

9 ought to

10 may

11 wouldn't

12 should call 

13 might not

14 wanted

15 shall we

16 can

EX 2

1 can

2 could

3 shall

4 can't

5 must

6 couldn't

7 will

8 can't

9 shall

10 couldn't

EX 3

1 Your sister could speak three foreign languages at age three.

2 Shall I help her?

3 You musn't copy during the test.

4 Sorry, I can't tomorrow.

5 I must start doing my homework now!

6 Can you borrow me a pen, please?

EX 4

1 J

2 A

3 B

4 C

5 I

6 G

7 D

8 E

9 N