Rewrite sentences without changing the meaning

My new class has 20 boys and 25 girls.

A. Where do your parents live?

B. Where are your parents living?

C. Where have your parents lived?

D. Where your parents are living?

A. Maths is the most interesting subject to me at school.

B. My favorite subject at school is Maths.

C. Maths is easy to study so I like it.

D. I love studying Maths than other subjects at school.

A. Nam cannot drive motorbike.

B. Nam is so young to drive motorbike.

C. Driving motorbike is too hard for Nam.

D. Nam is too young to drive motorbike.

A. My favorite subject is Chemistry because I can do many experiments at school.

B. My favorite subject at school is Chemistry because I can do many experiments.

C. My favorite school subject is Chemistry because I can do at many experiments.

D. I can do many experiments because my favorite subject at school is Chemistry

A. While I am reading books in the room, my mother is cooking 

B. While I am reading books in my kitchen, my mother is cooking 

C. While I am reading books in my room, my mother is cooking 

D. While I is reading books in my room, my mother am cooking 

A. English is very easy for Mai to study to talk with other foreign friends.

B. Mai studies English to talk with other foreign friends.

C. Mai is interested in studying English because she can talks with other foreign friends.

D. Talking with other foreign friends helps her study English

A. Lan and Mai are often going to school by motorbike.

B. Lan and Mai often go to school by their motorbikes.

C. Lan with Mai often go to school by motorbike.

D. Lan and Mai often go to school by motorbike.