Kate doesn't look very well .What's wrong with her she has a headache because she ____too long ,she ought to stop work.

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Kate doesn't look very well .What's wrong with her she has a headache because she ____too long ,
she ought to stop work.

A.has been reading
have/has been doing sth
现在完成进行时表示动作发生在以前,持续到现在并且有继续发生下去的趋势.

has worked

has been working