We shall ask for samples ___ and then we can make our decision.
We shall ask for samples ___ and then we can make our decision.
A、to be sent
B、being sent
C、to sent
D、to have been sent
【正确答案】:A
【题目解析】:不定式的用法。根据句意可知,样品还未送来,因此是将来发生的动作;其次,主语和谓语之间乃被动关系,因此选A。

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