46.If you develop AIDS,your chances of __________ (survive) are very small.
47.When I was young, I didn’t know much about the harmful_______ (affect) of smoking.
48.Those advice might help you to stop and ___________ (strong) your determination.
49.It is three years _______ our new school was built up.
50.They paid famous artists to paint pictures of themselves, their houses and ____________ (possess) as well as their activities and achievements.
51._______________ his effort, he failed.
52.We would have won if Jack __________________ (score) that goal.
53.It is in that small village __________ I was born that a new factory is being built.
54.I would rather you ___________ (tell) me the truth yesterday.
55.Sometimes I can use those scientific __________ (equip) freely.