Never before ______ such a wonderful place ______ Qingdao.
| A．have I been to; as | B．I have been to; like | C．have I been to; like | D．I have been to; as |
A poet and artist _____ coming to speak to us about Chinese literature and painting tomorrow afternoon.
| A．is | B．are | C．was | D．were |
We must try our best to the river being polluted any more.
| A．separate | B．keep | C．prevent | D．guard |
_____ he can pass the driving test is quite uncertain.
| A．If | B．Whether | C．That | D．What |
I tried phoning her office,but Icould not______.
A,get along B,get on C,get to D,get through
Sam_____some knowledge of the computer just by watching others working on it.
A,brought up B,looked C,picked up D.set up