— I have got a headache. — No wonder. You_______ in front of the computer too long. ( )

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问题 — I have got a headache.
— No wonder. You_______ in front of the computer too long. (    )

选项 A、work
B、are working
C、have been working
D、worked

答案C

解析 表示从过去某时开始一直延续到现在的动作时,要用现在完成进行体,该动作可能刚刚停止,也可能还在继续进行。本句意为:——我很头痛。——怪不得你头痛,你坐在电脑前工作太长时间了。答案为C。
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