题目内容
The manager ________ the workers how to improve the program since 9 a.m.
[ ]
A.has told
B.is telling
C.has been telling
D.will have told
答案:C
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题目内容
The manager ________ the workers how to improve the program since 9 a.m.
A.has told
B.is telling
C.has been telling
D.will have told