The graduating students are busy material for their reports.A. collect　B. to collect　C. c

发布时间：2020-08-16 12:27:19

The graduating students are busy material for their reports.
A. collect　
B. to collect　
C. collected　
D. collecting

网友回答

A. collect　
B. to collect　
C. collected　
(答案→)D. collecting
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