You have to be 18 years before you _________ to drive a car.

—I usually watch TV till 11 o’clock in the evening.—Really ? Are you __________?

Don’t  put off today’s work for tomorrow. I mean , today’s work _____today.

They ________ often _______to be careful before _______the road.

Nobody ______ to go into the laboratory without permission (允许).

This kind of flower  　　　  well these days. Would you like to have one?

Can 16-year-old students drive to school? No, they shouldn’t ______ to drive because they aren’t serious enough.

Teenagers              allowed to drive in the street .

I won’t leave the classroom until my homework              .

At least 24 people         in the earthquake in Yingjiang on March 10th.   

—Have you finished your fashion design?—Not yet. I’ll finish it if I ________ ten more minutes.

--Tree Planting Day is coming. Do you plant trees in spring?---Yes, many trees ________ in our city every year.

Both teachers and students _____ not to use mobile phones in class in our school.

He is too fat, and he is made ______ exercise by his parents every day.

---You see, great people ___________not because they were beautiful. ---Right. They didn’t give up when their lives were difficult.                  

--What happened in that store?-- A thief _____ by the policeman just now.

Zhengzhou will be more and more convenient when Zhengzhou Subway_____ in two years.

— Your classroom looks bright and tidy.— It        after school every day.

Unluckily, my grandma fell downstairs and her legs were badly _______. 

---- May we leave the classroom now? ---- No, you _____. You _____ to leave until the bell rings.