The missing boys were last seen_________ near the river.

A．[ A ] playing

B．[ B ] to be playing 　　在线ψ 考试中心┨

C．[ C ] play

D．[ D ] to play

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参考答案

【考点】固定搭配
【解析】本句意为：那些失踪的男孩们最后被看到时正在河边玩。See sb．doing sth．“看见某人正在做某事”；see sb．do sth．“看见某人做了某事”。故本题选A。

1 The conference has been held to discuss the effect of tourism_________ the wildlife in the area.

A．[ A ] in

B．[ B ]on　　在线ψ 考试中心┨

C．[ C ]at

D．[ D ] with

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2 Although he has taken a lot of medicine, his health _________ poor.

A．[ A ] proves

B．[ B ] remains 　　在线ψ 考试中心┨

C．[ C ] maintains

D．[ D ] continues

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3 When he left_________ college, he got a job as_________ reporter in a newspaper office.

A．[ A ]/; a

B．[ B ]/; the 　　在线ψ 考试中心┨

C．[ C ]a; the

D．[ D ]the; the

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