Lots of rescue workers were working around the clock
单项选择题 Lots of rescue workers were working around the clock,（）supplies to Yushu , Qinghai province after the earthquake.
A.sending
B.to send
C.having sent
D.to have sent
正确答案：A
答案解析:句意：地震发生后，大量的营救人员夜以继日地为青海省玉树县提供补给。该空为现在分句短语作伴随状语，故选A项。
登录查看解析 进入题库练习
