—Do you know what to do in the lab, Mike?
—Oh, sorry I don’t----just _____if I could get a ticket for the Shanghai Expo.
A．wonder B．wondered C．wondering D．having wondered
While reading, you should not always ___________ a dictionary to find the meaning of each new word.
A．look up B．turn to C．look for D．turn out
After dry days, everyone appreciates ______ when there is a timely rain．
A．that B．one C．this D．it
—What about the picnic plan?
—Not ________ yet．It’s being discussed..
A．decided B．decide C．deciding D．to be decided
Look at the new computers, of ______ none are produced abroad.
A．them B．whom C．which D．these
Theory is based on practice and ________ serves practice．
A．in turn B．by and by C．by chance D．in this case
