12.The teacher let me stay at home to finish the assignment
13,She has worked on that report for 3 hours
14,How long will their grandparents stay with them ?
15,Jane advised andew to look for a new job
16,After we had had lunch,we went to school
17,How often does Natasha visit her grandmother ?
18,It has not rained for a fortnight
29,When did they buy the house?
30,Would you mind turning off the lights ?
VII
1.D
2,D
3.A
4,D
5,A