题目内容
She ________ on this essay for twenty minutes but she has written only about a hundred words.
[ ]
A.
will be working
B.
worked
C.
has been working
D.
will have worked
答案:C
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题目内容
She ________ on this essay for twenty minutes but she has written only about a hundred words.
will be working
worked
has been working
will have worked