We must take measures to protect the endangered wildlife ______ it
is too late.
| A．before | B．as long as | C．now that | D．unless |
If he keeps on working so hard, he will sooner or later.
| A．break off | B．break up | C．break out | D．break down |
all the snow in the valley, the cabin still remained warm and comfortable.
| A．Despite of | B．In spite of the fact | C．Despite | D．Although |
You are notto smoke in the hospital.
| A．known | B．supposed | C．regarded | D．considered |
After the war, the American soldiers returned home,.
| A．safely and tiring | B．safety and tiring |
| C．safe and tiring | D．safe but tired |
Having retired from work, he is with the welfare(福利) of the disabled.
| A．associated | B．occupied | C．armed | D．abandoned |