问题
选择题
— 15 plus 7? —It's . [ ]
A. what, twenty-two
B. What's, twenty-two
C. How is, twenty-two
答案
答案：B
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— 15 plus 7? —It's . [ ]
A. what, twenty-two
B. What's, twenty-two
C. How is, twenty-two
答案：B