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17. ………….. do you play football ? – Because I like it.

A. why            B. which          C. where          D. what

18. …………….. do you go to school ? I go to school by bike.

A. How           B. what          C. when           D. where

19. My brother used to go work ………………………. bike.

A. by               B. to               C. on                           D. in

20. I …………..…………. to school on foot.

A. go               B. to go          C. going          D. goes

21. I like watching TV, ………………. I watch it in my free time.

A. so                B. when           C. but              D. or

22. …………. Do you brush your teeth ?-  Twice a day.

A. how often   B. how far       C. how many   D. how much