27、You know he is not going to let us leave early if we ___ get the work done.

A. can't                B. may not                   C. shouldn't                 D. mustn't

26、Both sides have accused of breaking the contract ___.

A. another             B. the other                  C. neither                     D. each

25、We ___ our new neighbors yet, so we don't know their names.

A. don't meet               B. won't meet               C. haven't met              D. hadn't met

24、The parents suggested ___ in the hotel room but their kids were anxious to camp out during the trip.

A. sleep                B. to sleep                    C. sleeping                   D. having slept

21、It’s important for us to use a word or phrase according to the __________ in language studies.

A．situation           B．translation        C．expression              D．condition

20、－It is a long time _________ I saw you last.

－Yes. And it will be a time ____________ we see each other again.

A．when; before    B．after; when      C．since; before    D．before; since

19、A Chinese satellite is expected to orbit Mars in 2009, _________ an agreement the country signed with Russia on Monday.

A．instead of         B．in spite of         C．as a result        D．thanks to

18、It was not until he got home __________ Mr. Brown realized he had left his keys in his office.

A．that          B．when        C．where       D．before