问题
选择题
He doesn't read the English text very often. ______ he has failed again. [ ]
A. It is why
B. That's because
C. It is reason
D. That's why
答案
答案：D
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He doesn't read the English text very often. ______ he has failed again. [ ]
A. It is why
B. That's because
C. It is reason
D. That's why
答案：D