By the time you ____ in, I ____ two letters.
| A．had come, had written | B．came, wrote |
| C．come, have written | D．came, had written |
.Being exposed for a long time_____strong sunlight might seriously damage your skin.
| A．in | B．under | C．to | D．over |
.It' s quite a time ______Yao Ming got injured, but it won' t be long________he returns to
the court.
| A．since;before | B．after; when | C．before;since | D．that; when |
.Culture shock is a feeling________ most travellers experience in a foreign country_______
they find the culture is quite different from that of their own.
| A．that; which | B．that; where | C．when; where | D．which； which |
As food is to the body, ______ is learning to the mind.
| A．and | B．such | C．it | D．so |
The question has been raised at the meeting_________each member country should equally
share the expense of the committee.
| A．that | B．whether | C．if | D．what |