When Edison was very young ,he liked to find out how ___.A.did things work B.do things work C.things work D.things worked
问题描述：
When Edison was very young ,he liked to find out how ___.
A.did things work B.do things work C.things work D.things worked
答
我觉得应该选B，因为前面用了过去式，后面就应该是原型。
答
D 正确。
how 引导的宾语从句，用陈述句语序
答
选D 这里考察宾语从句用陈述句语序的知识.即主语在前,谓语在后.C中时态不对,A和B中不能要助动词