Theystayedwithmeforthreeweeks,

问题详情：

 They stayed with me for three weeks, _____ they drank all the wine I had.

   A. which         B. which time       C. during which time    D. during that time

【回答】

 C。定语从句的先行词为three weeks，during which time引导非限制*定语从句，意为“在那段时间内”。

知识点：定语从句

题型：选择题