They lived a hard life and were often made _______ for over ten hours a day.
| A．work | B．to work | C．to working | D．worked |
. —Have you finished your composition?
—Yes, I _____it in twenty minutes.
| A．have finished | B．finished | C．will have finished | D．had finished |
It’s important that he_____ English well.
| A．learn | B．learns | C．learnt | D．learning |
I’m sorry that I can’t help _____ trees because I am busy with the homework.
| A．to plant | B．planting | C．planted | D．plants |
—What led to his success ?
—He succeed _____ working hard .
| A．to | B．in | C．through | D．by |
.I don’t think that the sentence need ______again.
| A．explaining | B．be explained | C．to be explained | D．explaination |