---Why didn’t you go shopping with me two hours ago?
---Because my mother________ me outside.
| A．waited for | B．is waiting for |
| C．was waiting for | D．has waited for |
---What do you think of the football match yesterday?
---Really wonderful. They have never played ________.
| A．best | B．better |
| C．worse | D．worst |
---Can people drive after drinking a glass of beer?
---No. According to the law they _________.
| A．mustn’t | B．can’t |
| C．needn’t | D．shouldn’t |
I really enjoyed your talk, ________ there were some parts I didn’t understand.
| A．because | B．unless | C．though | D．after |
Food safety is important. Rules must ________ stop people from food pollution.
| A．be made | B．be made to | C．make | D．make to |