Question

1)They live in a huge house and own three cars. They ... be rich.
A) Can't B) Can C) Must

2)... I help you carry these bags?
A) Will B) Shall C) Would you like

3)You ... water the plants. I've already watered them.
A) can't B) don't need C) needn't

4) He had studied hard so he ... answer all the questions in the test.
A) is able to B) was able ... C) can

5)You .... be rude to your parents.
A) mustn't B) must C) couldn't

6) You ... to eat more fruit and vegetables if you want to be healthy.
A) should B) had better C) ought

7) Sam .... be at work today. It's Sunday.
A) can't B) mustn't C) must

8) I... read or write when I was four years old.
A) can't B) couldn't C) wasn't able

9) We ... to be at the office at 9 o'clock every morning.
A) should B) must C) have

10) Dad, .... I go to Kelly's party tomorrow?
A) can B) might C) will

Answer 1

1 must
2 shall
3 needn't
4 is able to
5 mustn't
6 ought
7 mustn't
8 couldn't
9 have 
10 can