Câu hỏi: My children often spend many hours________ the computer screen.

A. in

B. among

C. on

D. upon

Câu 1: She’s the woman ................ sister looks after the baby for us.

A. who

B. which

C. that's

D. whose

Câu 2: Everyday, Ba often ………….my bike to go to school.

A. is riding

B. rode

C. rides

D. None is correct

Câu 3: My name is Mai. I’m ……… grade 6.

A. at

B. on

C. in

D. for

Câu 4: The plants which ................ in the living room need a lot of water.

A. are

B. be

C. is

D. was

Câu 5: Where do you come……? I’m from Vietnam.

A. from

B. to

C. for

D. up

Câu 6: I assume that you are acquainted ________ this subject since you are responsible ________ writing the accompanying materials.

A. to/for

B. with/for

C. to/to

D. with/with