题目内容
-He has been working ________.
-No wonder he looks very tired now.
[ ]
A.sooner or later
B.day and night
C.now and then
D.here and there
答案:B
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题目内容
-He has been working ________.
-No wonder he looks very tired now.
A.sooner or later
B.day and night
C.now and then
D.here and there