A. none B. something C. no one D. nothing
A. Will come B. come C. Would have come D. came
A. succeeded；succeeded B. success；success C. succeeded；success D. success；succeeded
A. it B. one C. other D. another
A. are reading B. have read C. had read D. have been reading
A. held B. have held C. are holding D. have been holding
A. finished B. would finish C. have finished D. had finished
A. Studied hard B. would study hard C. had studied hard D. Have studied hard
A. each other B. one another C. any other D. any
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