问题
选择题
| — I'm sorry I have failed again in the math exam. — _____? You've been working hard at the subject. |
A. How B. How come C. Why not D. When |
答案
答案：B
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| — I'm sorry I have failed again in the math exam. — _____? You've been working hard at the subject. |
A. How B. How come C. Why not D. When |
答案：B