Was it in 1969 ____ the American astronaut succeeded ____ landing on the moon?
| A．when; on | B．that; on | C．that; in | D．when; in |
To answer correctly is more important than _____.
| A．that you finish quickly |
| B．finishing quickly |
| C．to finish quickly |
| D．finish quickly |
And there, almost _____ in the big chair, sat her little brother, who never had to be told to keep quiet.
| A．having lost | B．losing | C．to be lost | D．lost |
I thought Jim would say something about his school report, but he ______ it.
| A．doesn’t mention | B．hadn’t mentioned |
| C．didn’t mention | D．hasn’t mentioned |
It is when the plane ______ that you’d better find out at the booking office.
| A．would take off | B．had taken off |
| C．was taking off | D．is taking off |
The baby is generally healthy, but every now and then he ______ a cold.
| A．has caught | B．is catching |
| C．will catch | D．does catch |