Since then the number of people who were addicted to smoking ________ 20%.[ ]

You could hardly imagine ______________ amazing the Great Wall was _______________ you saw it with your own eyes.

Do you think it’s a good idea to make friends withyour students—_____, I do. I think it’s a great idea.

I think sixteen-year –olds should not be allowed to drive.— ___________. They aren’t serious enough at the age.

I am sure Cindy will be able to find the hotel-she hasa pretty good _____of direction．