1.The population of the world has grown very fast _____four hundred years.

题目

1.The population of the world has grown very fast _____four hundred years.
a.for past the b.in the past c.in the past d.for past
2.We returned to our hometown___
a.in the last week b. last week c.for a week

答案

1.就是in the past了.你B和C都是啊
in the past + 时间,表示“在过去的几年里”,与现在完成时连用.
2.B
谓语动词是过去式,所以用过去式的时态就可以了.