1.He spent at least as much time reading as you _______on line yesterday.
A. had to chat B. do chatting
C. had chatted D. did chatting
【答案】D
【解析】考察替代的形式。本題的did代替spent,第二個as是關系代詞,代替time作為did(spent)的賓語,構成spend some time (in) doing sth花費時間做某事;故D正確。句意:昨天他花在閱讀上的時間和花在網(wǎng)上聊天的時間一樣多。