7. Look! Some birds_________ in the tree.(A) sing (B) singing (C) is singing (D) are singing

問題詳情

7. Look! Some birds_________ in the tree.
(A) sing
(B) singing
(C) is singing
(D) are singing

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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