问题描述:
He started to read books.He __ read for about an hour,when suddenly he__ that the room was dark.
A was reading;noticed
B read; noticed
C read; had noticed
D had read; was noticing
为什么选B不选A?
原句中第一个空后没有那个read
A was reading;noticed
B read; noticed
C read; had noticed
D had read; was noticing
为什么选B不选A?
原句中第一个空后没有那个read
问题解答:
我来补答展开全文阅读