Question

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

Answer 1

D

考察替代的形式。本题的did代替spent,第二个as是关系代词，代替time作为did(spent)的宾语，构成spend some time （in） doing sth花费时间做某事；故D正确。句意：昨天他花在阅读上的时间和花在网上聊天的时间一样多。