Does the way you thought of ________ the water clean make any sense?
| A．making | B．to make | C．how to make | D．having made |
一Mary said Mark started the fight and that David simply defended himself.
一 I don’t believe it. Those two hate each other. Anyway, ___________.
| A．It takes two to tango.团结才是力量 |
| B．Two wrongs don’t make a right.两个错加不出一个正确来。 |
| C．Attack is the best means of defense.进攻是最好的防御。 |
| D．You can take a horse to water, but you can’t make it drink.你可以把马牵到水边，但你不能让它喝水。 |
Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.
| A．did he tell | B．he told | C．was he told | D．he was told |
Staff are allowed to take a ten-minute break every two hours to relax, use the bathroom or do ___________ else is necessary.
| A．something | B．anything | C．whatever | D．what |
Every solid object ______ reflect a sound，varying according to the size and nature of the object．
| A．must | B．shall | C．will | D．should |
I would be happier if you did more studying while you are free, but you ___________.
| A．don’t | B．didn’t | C．wouldn’t | D．weren’t |