1.Great changes have taken place ____.
问题描述：
1.Great changes have taken place ____.
a.in the few year b.in the few years c.last year d.on the last year
2.Children wake up very early _____the morning of christmas day.
a.in b.on c.for d.at
3.________a cold winter morning,Imet her in the street.
a.in b.on c.at d.for
答
bbb
1.in the few yeas与完成时连用
2.表示特定一天的早上用on the morning of...或on a ... morning
如果只有早上就用in the morning
3.解释同上题