When he was working there he caught a serious illness from _____ efforts he still suffers.
| A．which | B．that | C．whose | D．what |
When you’ve finished with that book,don’t forget to put it back on the shelf,_______?
| A．do you | B．don’t you | C．will you | D．won’t you |
Leave your key with a neighbor _______ you lock your-self out one day.
| A．ever since | B．even if |
| C．soon after | D．in case |
I got caught in the rain and my suit _______.
| A．has ruined | B．had ruined |
| C．has been ruined | D．had been ruined |
You have failed two tests.You’d better start working harder,_______ you won’t pass the course.
| A．and | B．so | C．but | D．or |
The new group of students is better-behaved than the other group who stayed here _____.
| A．early | B．earlier | C．earliest | D．the earliest |