题目

题型：同步题难度：来源：

用when或 while填空1.         we were talking in the classroom, the teacher came in.
2.         they got to the airport, it was raining.
3.         she was reading a book,the phone rang.
4.         I saw the boy, he was wearing a new coat.
5.         he was reading,he fell asleep.

答案

l. While   2. When   3. While   4. When   5. While