2. 外语
  3. I didn’t manage to work out the problem ______ the teacher had explained how.

I didn’t manage to work out the problem ______ the teacher had explained how.

admin2009-12-10  70
问题 I didn’t manage to work out the problem ______ the teacher had explained how.
选项 A、until
B、unless
C、when
D、before
答案A
解析
转载请注明原文地址:https://kaotiyun.com/show/9X5d777K
本试题收录于： 公共英语二级笔试题库公共英语（PETS）分类
0

公共英语二级笔试

公共英语（PETS）

相关试题推荐
随机试题
最新回复(0)