What the doctor really doubts is ______ my mother will recover from the serious disease soon.
| A．when | B．how | C．whether | D．if |
I don’t expect the children to be noisy, nor ________ them to be quiet.
| A．I expect | B．do I expect | C．I have expected | D．have I expected |
It’s difficult to ___ these old books for some of them ______ none of the classification.
| A．look for; are belonging to | B．put up; belong |
| C．sort out; belong to | D．pick up; are belonged to |
Many kinds of animals and plants die _________ every year.
| A．down | B．away | C．out | D．from |
We should do something to _______ the plant ______ the cold weather.
| A．protect; from | B．prevent; from | C．protection; from | D．prevent; against |
I’d appreciate _______ if you would teach me how to use the computer.
| A．that | B．it | C．this | D．one |