2. 金融经济
  3. The manager __________the workers how to improve the program since 9 a.m.A.has t

The manager __________the workers how to improve the program since 9 a.m.A.has t

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问题 The manager __________the workers how to improve the program since 9 a.m.
选项 A.has told
B.is telling
C.has been telling
D.will have told
答案C
解析句意为从上午九点开始，经理在一直不停地告诫工人如何去完善这个项目。由时间状语since。9 a．m．可先排除B和D；根据句意，此处需要的是“一直不停地告诫”，强调持续性，应用完成进行时，故答案为C。
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