______ you do the experiment carefully, you would make discoveries others wouldn’t make.
| A．Should | B．Would | C．Could | D．Might |
Try to _______ him to let us go with him.
| A．manage | B．suggest | C．persuade | D．allow |
He talked a lot about things and persons _______ they remembered in the school.
| A．that | B．which | C．whom | D．what |
Bob insisted that he ________ nothing wrong and _______ from work.
| A．did; won’t be fired | B．had done; not be fired |
| C．should do; mustn’t be fired | D．do; shouldn’t be fired |
The war was ________ and people began to live a peaceful life.
| A．in the end | B．by the end | C．at an end | D．at the end |
Was it an accident or did David do it ________?
| A．on purpose | B．at once | C．in time | D．as usual |