—Nowadays the doctors are trying their best to reduce the people’s fear__________ they would be affected by the present disease called “Bird Flu （禽流感）”.
| A．whether | B．which | C．that | D．when |
_______to sunlight for too much time will do harm to one’s skin.
| A．Exposing | B．Being exposed | C．Having exposed | D．Exposed |
— Can you lend me the book Gone with the Wind?
— Sorry. I returned it to the library just now. Maybe it is still ____.
| A．available | B．affordable | C．acceptable | D．valuable |
You are working too hard. You'd better keep a ________ between work and relaxation.
| A．promise | B．read | C．balance | D．diary |
It is by no means clearthe president can do to end the strike.
| A．how | B．which | C．that | D．what |
When deeply absorbed in work, ________ he often was, he would forget all about eating or sleeping.
| A．that | B．which | C．where | D．when |