题目内容
I don’t know who wrote the letter.It can’t be Mrs.Johnson , ________ she was not in the office that day.
[ ]
A.while
B.when
C.as
D.though
答案:C
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题目内容
I don’t know who wrote the letter.It can’t be Mrs.Johnson , ________ she was not in the office that day.
A.while
B.when
C.as
D.though