问题
选择题
—________?
—I usually play tennis.[ ]
A. Why do you play tennis
B. What do you usually do on weekends
C. Where do you play tennis
D. When do you play tennis
答案
答案：B
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—________?
—I usually play tennis.[ ]
A. Why do you play tennis
B. What do you usually do on weekends
C. Where do you play tennis
D. When do you play tennis
答案：B
”表示氯原子) 