The girl was often heard _happily in her room.
问题描述:
The girl was often heard _happily in her room.
A.sing B.to sing C.singing D.sings
应该选哪一个?
答
答案是B使役动词的被动语态要还原省略的动词不定式to
绝对没错的.我是初三的英语老师