问题
选择题
She ought to stop work; she has a headache because she ______ too long. [ ]
A. has been reading
B. had read
C. is reading
D. read
答案
答案：A
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She ought to stop work; she has a headache because she ______ too long. [ ]
A. has been reading
B. had read
C. is reading
D. read
答案：A