Ex2:Điền các giới từ in,on,at vào các câu sau.  
1:Will she be home_____time for lunch.  
2:The week will begin____Sunday.  
3:They got to the station just____time to catch the train.  
4:Thy left school____the end of 15.  
5:This restaurant will close____midnight.
        GIÚP MIK NHA MN