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

27、The companies are working together to create ______ they hope will be the most efficient medicine to cure patients of lung cancer.

A．which            B．that           C．what        D．who