I find it interesting to study English culture

1.D

2.A

3.C

4.A

5.B

4.(-) There aren't four apples

(?) Are there four apples?

5.(-) Her name isn't Jenny 

(?) Is her name Jenny? 

6.(-) Peter and David aren't students

(?) Are Peter and David students? 

8.(-) His grandpa isn't 60 years old 

(?) Is his grandpa 60 years old?