Knowledge we gained in school is very important,（)we will depend in the future.
A. in which
B. of which
C. to which
D. on which
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She is so busy and can ’t（)any time.
A. repair
B. spread
C. spear
D. spare
If you meet some new words, just（)the dictionary.
A. look up
B. consult
C. conduct
D. look for
Keep on working,（)you will be successful.
A. actually
B. punctually
C. gradually
D. eventually
I am sorry（).
A. to keep you waiting
B. to make you waiting
C. to have kept you waiting
D. to have made you waiting
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