One way to ________ species under threat of extinction—whatever the cause—is to remove them to zoos or parks and feed them there.
| A．betray | B．resist | C．preserve | D．abandon |
According to their predictions, more than 20,000 tourists are expectedby the hotel this year.
| A．to be received | B．to receive | C．receiving | D．received |
---Do you allow your son to go to any Internet café on holidays?
---not !
| A．Extremely | B．Thoroughly | C．Absolutely | D．Completely |
We should not let our grandparents ,who are too old and weak ,alone.
| A．live | B．living | C．to live | D．lived |
Milk bottles need cleaning thoroughly before they are used again ,they?
| A．don’t | B．mustn’t | C．needn’t | D．aren’t |
The young for growing independence while the elder want their son or daughter to listen to them.
| A．tended to ask | B．tends asking | C．tend to ask | D．tend toward asking |