11.Thursday is the f    ___    day of a week.

12. Yesterday it rained very h_______      , so I didn’t go out.

13. My parents enjoy l              in the countryside very much.

14. Do you have any l             time? I want your help.

15. The computer is an important i             .

16. There will be less p              in 100 years.

17. We will have a long v            after a few days.

18. Do you have a c             card?

19. The other students kept their eyes c               right away.

20. Their lives will be a lot b            than it is now.

查缺补漏。理解句意，填补所缺部分

My parents enjoy l　　   in the countryside very much.