The overseas Chinese scientist made another wonderful discovery, ___________ of great value to study AIDS.
| A．which I think it is | B．which I think is | C．I think it is | D．I think is |
I don't __________ computer books, since they tend to go out of date really quickly.
| A．care about | B．care for |
| C．look about | D．look for |
He was very __________ of my safety.
| A．thought | B．thinking |
| C．thinks | D．thoughtful |
If you've finished we can have a coffee, if not, you'd better keep __________.
| A．worked | B．to work |
| C．working | D．being worked |
One of the most important tasks for a school is to help and promote to __________ a child's character.
| A．advance | B．preserve |
| C．transform | D．form |
Everybody should fight the __________ for women's rights in Africa and Asia.
| A．battle | B．war |
| C．struggle | D．change |