問題詳情

21. Mary wants to go hiking in the mountain this Saturday. She needs to make sure _______the weather will be fine.
(A) how
(B) what
(C) why
(D) whether

參考答案

答案:D
難度:計算中-1
書單:沒有書單,新增

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X(A)物質X匱乏時,冰棒即是美食☆ →...