All the students in my class are busy _________ for the final examinations. [ ]A. prepareB. to prepa

题目简介

All the students in my class are busy _________ for the final examinations. [ ]A. prepareB. to prepa

题目详情

All the students in my class are busy _________ for the final examinations.
[     ]
A. prepare
B. to prepare
C. preparing
D. prepared
题型:单选题难度:中档来源:同步题

答案

C

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