单选题
1.
Jessica ought to stop working, she has a headache because she ______ too long.
A、
reads
B、
is reading
C、
has been reading
D、
had read
【正确答案】
C
【答案解析】
根据句意“Jessica应该停止工作,因为长时间的阅读使她的头很疼”。应使用现在完成进行时。
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