【题目】连成词句：falling stairs the are down apples the (.)
_______________________
【答案】The apples are falling down the stairs.
【解析】
are falling down正在落下，the stairs楼梯，the apples苹果，根据所给的句号，可知句子是一个陈述句，根据所给词义可以连成句子：苹果正在落下楼梯。故答案为The apples are falling down the stairs.