He thought he heard someone following him, and ___ round. He caught sight of a dark figure in the shadow.
| A．glanced |
| B．glared |
| C．stared |
| D．observed |
— How long will it be _______ the president pays another visit to China?
— It all depends.
| A．before | B．until | C．since | D．when |
Look! the ground is wet. It must have rained last night, _______?
| A．hasn’t it | B．didn’t it | C．mustn’t it | D．hadn’t it |
Generally speaking, _______ according to the directions, the drug has no side effect.
| A．if taking | B．if taken | C．if to take | D．if being taken |
Tom is _______ learning English. To learn it well, he abandons all his hobbies.
| A．bound to | B．desperate to | C．bent on | D．accustomed to |
You are always telling me I am lazy. Look at your room. What a mess it is! ________.
| A．The day has eyes, the night has ears |
| B．The great thieves punish the little ones |
| C．That is like the pot calling the kettle black |
| D．When one will not, two cannot quarrel |