1) There is a pen in pencilcase.
( - ) There isn't a pen in pencilcase.
( ? ) Is there a pen in pencilcase?
2) There are many trees in my garden.
( - ) There aren't any trees in my garden.
( ? ) Are there many trees in your garden?
3) He does his homework.
( - ) He doesn't do his homework.
( ? ) Does he do his homework?
4) My brother watches TV everyday.
( - ) My brother doesn't watch TV everyday.
( ? ) Does your brother watch TV everyday?
5) It rain every night.
( - ) It doesn't rain every night.
( ? ) Does it rain every night?
6) They drive to work by car.
( - ) They don't drive to work by car.
( ? ) Do they drive to work by car?
7) We learn English everyday.
( - ) We don't learn English everyday.
( ? ) Do you learn English everyday?
8) Mai and Nga play tennis after school.
( - ) Mai and Nga don't play tennis after school.
( ? ) Do Mai and Nga play tennis after school?
9) He is an engineer.
( - ) He isn't an engineer.
( ? ) Is he an engineer?