问题
What were you and your cousin doing at this time yesterday— He was reading a magazine ________ I was writing an e-mail.
A:as
B:while
C:when
D:after;
B:while
C:when
D:after;
正确答案是：
同类题型
She sometimes ______ the train to work.
I feel a little hungry, Mom.–There are some pieces of bread on the plate. You can take ______.
Our teachers ________ receive presents from us on Teachers’ Day.
It is that Jack often cheats in exams ________ makes his teachers angry with him. [ ]
No more of this fancy playing with words—Iwant some ______ talk here.