【题目】找出与所给单词同类的单词：help ( )

【题目】找出与所给单词同类的单词：stairs ( )

【题目】找出与所给单词同类的单词：who ( )

【题目】找出与所给单词同类的单词：balloon ( )

【题目】找出与所给单词同类的单词：buying ( )

【题目】is barking dog the very loudly (.) （连词成句）

【题目】for she is playing time piano the third the (.) （连词成句）

【题目】They are singing and dancing.（对画线部分提问）

【题目】Your sister had an ice cream.（改为现在进行时）

【题目】My mother is washing clothes. The doorbell rings. （用but连成一句话）