Whoever leaves the lab last, _____ all the lights are turned off.
| A．make sure | B．make sure of | C．be sure | D．be sure of |
The teacher set such difficult problems ______ nobody could work out _____ none of us passed the test.
| A．/ ; that | B．that; as |
| C．as; that | D．as; as |
The doctor insisted that the patient_______seriously ill and that an operation_______in no time.
| A．was; be carried out | B．should be; be carried out |
| C．was; was carried out | D．should be; was carried out |
It _____ every day so far this month. I can’t tell you if it _____ tomorrow.
| A．rained; rains | B．is raining; shall rain |
| C．has rained; rains | D．has been raining; will rain |
The most crowded part in a city is usually the city center, ______ many shopping malls and office buildings.
| A．which lie | B．which lies |
| C．where lie | D．where lies |
Although his present wasn’t worth too much, I still appreciated it very much. In my view, it’s the thought that ______.
| A．counts | B．works |
| C．comforts | D．deserves |