问题
选择题
| Some students watch TV ______. |
A. once and twice a week B. once or twice a week C. a week once and twice D. a week once or twice |
答案
答案：B
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| Some students watch TV ______. |
A. once and twice a week B. once or twice a week C. a week once and twice D. a week once or twice |
答案：B