He has been working hard day and night, which, of course,      his tiredness.
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A
accounts for
B
answers for
C
applies for
D
stands for
推荐题目
. Lu Xun ______ a lot of novels.
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A
wrote
B
had written
C
was writing
D
has written
Our class _______ of thirty-two boys and twenty-three girls.
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A
is consisted
B
concludes
C
consists
D
contains