15. Don’t (　　　　 )(leave/forget) your book at home.

14. It’s five (　　 )(minute)walk from my home to school.

13. Don’t forget (　　　　 ) (lock)the door when you leave.

12.He finished (　　　 )(do) his homework on time.

11.Her cousin is a (　　　 ) in a rich family.(babysit)

10. I received an (　　　　 )from my friend Tom.(invite)

9.(　　　 )(balance) diet is good for your health.

8.He had to look after his (　　　　 )(sick/ill)father in hospital.

7.That must be a lot more (　　　　 )than staying at home.(fun)

6.Don’t forget (　　　 )when you cross the road.(safe)