25．It's time ____ school.

24．I often help my mother ____ _ the housework.

23．Don't sleep ____ the open air.

22．May I borrow a pencil ____ you?

21．I was born ____ July 1, 1982.

20．You can buy some school things ____ your way home.

19．We have lunch ____ the middle of the day.

18．My father teaches English ____ a school.

17．I think the shop is closed ____ this time of day.

16．One ____ the students is in the classroom.