Ex3: Viết các câu sau ở thế khẳng định (+), phủ định (-) và nghi vấn (?)
1. (+) The girl often listens to pop music.
(-) .........................................................
(?) .........................................................
2. (+) I am from Vietnam.
(-) ...................................
(?)....................................
3. (-) My father doesn't keep thes greenhouse warm at night.
(+) .....................................................................................
(?).....................................................................................
4. (+)...................................................................................
(-) ................................................................................
(?) Does Kate remember to phone his mom?
5. (+)....................................................
(-) They don't do their homework
(?).....................................................