摘要：31．She ought to stop working; she has a headache because she too long. A．had read B．read C．is reading D．has been reading
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She ought to stop working; she has a headache because she ________ too long.
[ ]
A．had read
B．read
C．is reading
D．has been reading
She ought to stop working. She has a headache because she ________too long.
[ ]
A．has read
B．is reading
C．has been reading
D．reads