题目

读一读,选一选。 一只A.石头一棵B.树洞一个C.大树一块D.小鸭 答案:【1】D【2】C【3】B【4】AThe children ______ very quiet; I wonder what they ____up to. A.were; are beingB.are being; are C.are; doD.are being; do
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