我们必须等绿灯,然后才能过马路.We must __ __ __ __,then we can ＿ ＿ ＿．
问题描述：
我们必须等绿灯,然后才能过马路.We must __ __ __ __,then we can ＿ ＿ ＿．
答
wait for green light,.cross the road
我们必须等绿灯,然后才能过马路.We must __ __ __ __,then we can ＿ ＿ ＿．
wait for green light,.cross the road