37、--Has your teacher returned from America yet?

--Yes, but he _______ here for only three days before his company sent him to Africa．

A．was           B．has been          C．will be          D．would be

36、He told us whether _________ a picnic was still under discussion．

A．to have           B．having           C．have          D．had

35、Ladies and gentlemen, please remain ________ until the plane has come to a complete stop．

A．seated             B．seating          C．to seat            D．seat

34、_______ many times, he finally understood it．

A．Taught          B．Teaching         C．Having taught           D．Having been taught

33、She thinks women have to do more than men do when they ______ for jobs or honors．

A．select              B．compete         C．store        D．charge

32、In the morning you can get up only______ all your equipment buried and you’ve got to dig it out．

A．to be found           B．found        C．to find        D．finding

31、We had a big meal in a fine restaurant last Monday and the total cost_______ five hundred dollars．

A．came through        B．came in        C．came out with              D．came to

30、I don’t mind picking up your things from the store．______ the walk will do me good．

A．Sooner or later        B．Besides       C．Still       D．In time

28、It never ________ to me that as one of the top students he should fail in the exam.

A．occurred       B．happened       C．appeared       D．sounded