问题
选择题
| —______ did you begin to skate? —______ I was ten. |
A. What; When B. How; While C. When; When D. Which; Since |
答案
答案：C
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| —______ did you begin to skate? —______ I was ten. |
A. What; When B. How; While C. When; When D. Which; Since |
答案：C