I often saw the boys in the river.A．swamB．swimmingC．to swimD．swim

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I often saw the boys in the river.

A．swam

B．swimming

C．to swim

D．swim

答案

解析

试题分析：句意：我经常看到这些男孩子在河里游泳。see sb. do sth.看到某人做某事，看到了全过程；see sb. doing sth.看到某人正在做某事，看到正在进行的动作，故选D。

举一反三

________ the bridge, and you’ll see the elephants.

A．Across

B．Cross

C．Crossing

D．To cross

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.My uncle stopped __________ to talk to me when he saw me.

A．working

B．to work

C．worked

D．works

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It’s terrible. The cat miaowed a lot at night. It ________ a baby crying.

A．sound

B．sounds

C．sounds like

D．sounding like

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Books are made _______ paper while paper is mainly made _______ wood.
A. of; of B. from; from C. of; from

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While I was walking along the lake, I saw some fish _______ out of the water.
A. jumped B. to jump C. jumping

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