— Where is John? — He _____ in the library.
A.should be | B.must be | C.can be | D.must have been |
The research showed beyond that smoking contributes to heart disease.
A.reach | B.power | C.doubt | D.problem |
That art center is ____ used to be a factory,_____ millions of cars were made.
A.what; which | B.where; where | C.what; where | D.where; which |
—Are you going to help him?
—Why ___ I help him? He' s never done anything for me.
A.would | B.could | C.might | D.should |
The captain determined to be with the ship forever and never to disappointment even when the ship sank.
A.gave way | B.gave over | C.gave off | D.gave up |
It is said that the old pot ____under the earth for about 1000 years by the time it was discovered.
A.had buried | B.had been buried | C.buried | D.were buried |