Last night Bruce was observed________the building with two young men and take a

题型：不详难度：来源：

Last night Bruce was observed________the building with two young men and take a taxi away.

A．leave	B．left
C．having left	D．to leave

答案

解析

此题考查observe sb.do sth.的被动语态，sb.is observed to do sth.。
答案：　D

举一反三

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C．is decreasing	D．are decreasing

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