1.  Where is rice grown?

2. I am frightened of this film./ I find this film frightening.

3. They used to be poor. 

4. They no longer ride a bike.

 They don't ride a bike anymore. 

5. If she is lucky, she will win the cookery competition. 

6. Because of the bad stomachache, I couldn't sleep. 

 Because I had a bad stomachache, I wasn't able to sleep.

7. School uniforms don't have to be worn at all time.

8. It took him 15 minutes to lie on the beach.

9. Linda doesn't live with her parents anymore.

11. People who disobey traffic rules should be fined heavily by police.

12. In spite of the high salary, Tom gave up his job.

13.  Though it rained heavily, the children went swimming.

1.

→ Where is rice grown?

2.

→  I find this film frightening.

3.

→ They used to be poor. 

4.→ They no longer ride a bike.

→ They don't ride a bike anymore. 

5.

→ If she is lucky, she will win the cookery competition. 

6.→ Because of the bad stomachache, I couldn't sleep. 

→ Because I had a bad stomachache, I wasn't able to sleep.

7.

→ School uniforms don't have to be worn at all time.

8.

→ It took him 15 minutes to lie on the beach.

9.

→Linda doesn't live with her parents anymore.

10. Lm rồi

11.

→ People who disobey traffic rules should be fined heavily by police.

12.

→ In spite of the high salary, Tom gave up his job.

13.  

→ Though it rained heavily, the children went swimming.