He looks cool when he _____blue trousers.A.dresses up in B.dress up in C.dresses up with D.dress up with顺便问一下when的用法是什么?

问题描述:

He looks cool when he _____blue trousers.
A.dresses up in B.dress up in C.dresses up with D.dress up with顺便问一下when的用法是什么?

A,固定用法

A 用主动语态 因为如果是被动语态的话应该是WHEN "HE IS" DRESSED UP IN