(+) He learns English
(-) He doesn't learn English
(+) You eat hamburgers
(-) You don't eat hamburgers
(-) My sister doesn't sing a song beautifully
(?) Does your sister sing a song beautifully?
(+) Tuan studies English anymore
(?) Does Tuan study English anymore?
(-) I am not an exchange student now
(?) Are you an exchange student now?
(-) She is not visiting her parents tomorrow
(?) Is she visiting her parents tomorrow?
(-) My brother doesn't translate newspapers into Vietnamese
(?) Does your brother translate newspapers into Vietnamese?
(+) You continue working
(-) You don't continue working
3 they aren't excellent students
are they excellent students?
5 people don't admire her very much
do people admire her very much?
6 david and peter don't start playing the piano
do david and peter start playing the piano?
7 these clothes aren't very expensive
are these clothes very expensive?
8 he learns english
he doesn't learn english
9 we/ i eat hamburger
we/ i don't eat hamburger
10 my sister doesn't sing a song beautifully
does your sister sing a song beautifully?
11 tuan studies enlish
does tuan study english any more?
12 i am not an exchange student now
are you exchange student now?
13 she isn't visiting her parents tomorrow
is she visiting her parents tomorrow?
14 my brother doesn't translate newspaper into vietnamese
does your brother translate newspaper into vietnamese?
15 i countinue working
i do not continue working
