11. Is Lan's birthday ............ March.
12. Yen has Math and Music .......... Monday.
13. Tom is good .............. Physics.
14. What do you often do ......... recess?
15. Tom lives ........... the city, but Mary lives ............. a farm.
16. The teacher is standing ........... the middle ............. the room.
17. Cao has to stay ............... home to take care .......... his dad.
18. You'II give flu ............... others if you go ...... school.
19. It's hot .......... the summer and especially.
20. We often listen .......... pop music ........... night.