A-A+
1．_________I came in Jimmy had already worked
问题详情
1．_________I came in，Jimmy had already worked out the maths problem．
A． In the time
B． On the time
C． Since
D． By the time
参考答案
正确答案：D
I 1．D【解析】by the time到……时止，by the time引导的从句通常用过去完成时．
考点：
