Lots of rescue workers were working around the clock, supplies to Yushu, Qinghai Province

发布时间：2020-08-16 11:30:17

Lots of rescue workers were working around the clock,     supplies to Yushu, Qinghai Province after the earthquacke.
A. sending
B. to send
C. having sent
D. to have sent

网友回答

(答案→)A. sending
B. to send
C. having sent
D. to have sent
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