Youbuy a gift, but you can if you want to.
| A． | must | B． | mustn't | C． | have to | D． | don't have to |
—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 |