As we all know, the functions of our skin are very .
| A．complex | B．simple | C．brief | D．tight |
As soon as the manager entered his office, he began to_____the telephone book on his desk.
| A．look up | B．look into | C．look upon | D．look through |
----Don’t look down upon Bob. He has his own advantage.
--- Oh, yes. _______ others are weak, he is strong.
| A．If | B．When | C．Where | D．Though |
Yesterday, Jane walked away from the discussion. Otherwise, she ______something she would regret later.
| A．had said | B．said | C．might say | D．might have said |
----Would you mind if I turned off the air conditioner?
----______. It makes no difference to me.
| A．Never mind | B．Not at all | C．Sure, go ahead | D．Why not? |
If ______ in wet sand, the vegetables can ______ fresh for a long time.
| A．being buried; remain | B．buried; remain |
| C．buried; be remained | D．burying; remain |