题目内容：

When he looked back,he could ___ the UFO in the sky.A watch B hear C see D look at
When he looked back,he could ___ the UFO in the sky.
A watch B hear C see D look at
请给理由.

优质解答

When he looked back,he could ___ the UFO in the sky.
A watch B hear C see D look at
选C
根据句意,当他回头看时,他 UFO在天上
因该填看见
watch 有看的意思,但是侧重于看的过程
比如说看电视 看比赛之类用watch
hear是听见 根据句意排除
look at 有看的意思,但是侧重于仔细观察
所以选C 意为看见