问题

Lots of rescue workers were working around the clock,____ supplies to Yushu, Qinghai Provinceafter the earthquake. [ ]

A: sending
B: to send
C: having sent
D: to have sent

正确答案是：

同类题型

I need that pair of _______.

It is obvious _________ he has known the news and he is very satisfied with the result.

Can you stay here and help me ______?— Sorry, I have a meeting to attend ______[ ]

_______ you do, do it well.

ot what we do once in a while ______ shapes our lives, but what we do consistently.