The boy fell asleep where he without undressing. A. was layingB. was lyingC. had laidD. h

问题补充：

The boy fell asleep where he ,without undressing.

A. was laying

B. was lying

C. had laid

D. had lied

答案：

A. was laying

(答案→)B. was lying

C. had laid

D. had lied

解析：考查动词和时态：lie躺卧: 过去式，过去分词和现在分词是lay-lain-lying，lay安放,产卵：的过去式，过去分词和现在分词是laid-laid-laying，句意：男孩在他躺的地方睡着了。说明睡着了表示他当时正躺在那里，要用过去进行时。A项是“正放置”，所以选B。