20._____________my opinion, customer service here has improved but not as much as expected overthe last 2 years.
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21.We are sure that we___________our second project by the end of the next month.
A) will have completed
B)had completed
C)completed
D)were completing
22. The bank clerk listened carefully__________he could discover exactly what the client wanted.
A) in case that
B) now that
C)so that
D)provided that
23. This dictionary is a three-thousand common word collection with samples of_________andspoken language.
A)writing
B)wrote
C)write
D)written
24. He was educated at the local grammar school, after_________he went on to Cambridge.
A)what
B)that
C)which
D)whom