题目内容：

写出下面词组和句子
be careful of the gap（同义词） foot bridge（同义词） reach（同义词）
line up to wait for the train 同义
behind the white safety line 同义
that'll be 125yuan inall 同义

优质解答

look out of the gap, pedestrian bridge ,arrive
stand in a queue to wait for the train ,after the white safety line that'll be 125yuan totally.