问题
选择题
He has been working so hard. _____ he could answer such a difficult question.[ ]
A. No wander
B. No wonder
C. why
D. because
答案
答案：B
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He has been working so hard. _____ he could answer such a difficult question.[ ]
A. No wander
B. No wonder
C. why
D. because
答案：B