1) My friends are students.
(-) My friends aren`t students.
(?) Are my friends students?
2) His sister is teacher.
3) My grandmother has got dog.
4) They have got nice garden.
5) I can swim.
6) (+) She is often swim.
(-) She isn`t often swim.
(?) Is she often swim?
7) He is swimming now.
8) We sometimes go to the park.
9) (+) We are going to the park now.
(-) We aren`t going to the park now.
(?) Are we going to the park now?