1,Nga's sisters have classes on Saturday.
( ? ) When does Nga's sister have classes ?
( - ) Nga's sisters doesn't have classes on Saturday.
2,She watches TV every night.
( ? ) How often does she every night ?
( - ) She doesn't watches TV every night.
3,Mai's teacher does the housework Every evening.
( ? ) How often does Mai's teacher every evening ?
( - ) Mai's teacher doesn't the housework every evening.
4, These couches are in The living room.
( ? ) Where are the couches ?
( - ) These couches aren't in the living room
5,There is a bookshelf in Nam's room.
( ? ) Where is a bookshelf ?
( - ) There isn't a bookshelf in Nam's room.
6,We have literature on Friday.
( ? ) When do we have literature ?
( - ) We don't have literature on Friday.
7, Nam does his homework at 8 o'clock.
( ? ) What time does Nam his homework ?
( - ) Nam doesn't his homework at 8 o'clock.
8,Mai 's school is in the country.
( ? ) Where is the Mai's school ?
( - ) Mai 's school isn't in the country.
9, I live in Ho Chi Minh City.
( ? ) Where do you live ?
( - ) I don't live in Ho Chi Minh City.
10, Mai and Lan are students
( ? ) What do they do ?
( - ) Mai and Lan aren't students