問題詳情
20. It is difficult to walk on some_______ in big cities because thevendors always put their personal goods there and people liketo park their motorcycles there.
(A) supermarkets
(B) parks
(C) sidewalks
(D) conveniencestores
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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