句式不完整,应该加上 to us
不过硬选择就选择 A,即:to be sent to us
ENGLISH Learn:41.We shall ask for samples _________ and then we can make our decision.
ENGLISH Learn:41.We shall ask for samples _________ and then we can make our decision.
A.to be sent B.being sent C.to send D.to have been sent
A.to be sent B.being sent C.to send D.to have been sent
英语人气:200 ℃时间:2019-08-19 02:35:26
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