题目内容
________ I entered his room, he was writing a letter.
- A.When
- B.Since
- C.While
- D.As
A
练习册系列答案
相关题目
— Mr. Lee _ to a student when I entered the classroom this morning.
- He is very patient _ _he is young.
- He is very patient _ _he is young.
| A.talking; but | B.talks; though | C.was talking, though | D.talked, however |