1)they live in a huge house and own three cars. they be rich. a) can't b) can c) must 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) 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
2 shall
3 needn't
4 is able to
5 mustn't
6 ought
7 mustn't
8 couldn't
9 have
10 can