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The manager his workers how to improve the program since 9 am.A. has toldB. is tellingC. has been te

编辑:chaxungu时间:2026-04-27 02:51:30分类:高中英语题库

【题目】The manager _______ his workers how to improve the program since 9 am.

A. has told

B. is telling

C. has been telling

D. will have told

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【答案】C

【解析】句中出现since 9 am一直到现在,要用现在完成进行时。