I had a lot of trouble______the book you wanted.A.to find B.to finding C.find D.finding 为什么选D
问题描述:
I had a lot of trouble______the book you wanted.A.to find B.to finding C.find D.finding 为什么选D
最好说明用法!急
答
have trouble (in) doing sth.固定搭配.介词in 经常被省掉