The professor said he could talk on （）interested the audience．

单项选择题You （）him so closely; you should have kept your distance．

A.shouldn’tfollow
B.mustn’tfollow
C.couldn’t have been following
D.shouldn’t have been following

单项选择题It （）quite a few years （）the accused was declared innocent and set free．

A.was；since
B.is；that
C.will be；when
D.was；before

单项选择题In fact Peter would rather have left for San Francisco than （）in New York．

A.to stay
B.stayed
C.stay
D.having stayed

单项选择题We must remember that （）fashion is not the most important thing in （）life．

A./；the
B./；/
C.the；/
D.the；the

单项选择题Professor Wang ,（）for his informative lectures, was warmly received by his students．

A.knowing
B.known
C.to be known
D.having known