题目内容
-Something wrong with my headache.
-No wonder.You ________ on the program for such a long time.
[ ]
A.
have worked
B.
worked
C.
have been working
D.
were working
答案:C
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题目内容
-Something wrong with my headache.
-No wonder.You ________ on the program for such a long time.
have worked
worked
have been working
were working