問題詳情

5. Do we need to change our toothbrushes in the graph?
(A) Yes, we need to change them every three or four months.
(B) Yes, every day.
(C) No, we don’t have to.
(D) No, we can always use our toothbrushes.

參考答案

答案:A
難度:計算中-1
書單:沒有書單,新增

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