Câu hỏi: Scientists ____ on the site found many ancient tools, tombs and pottery, and made some important archaeological discoveries.

A. worked

B. working

C. to work

D. to be working

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

A. who

B. which

C. that's

D. whose

Câu 2: There is a luxurious hotel to the _______ of his house.

A. front of

B. opposite

C. right

D. between

Câu 3: Where is Mary? She………… books in the library at the moment.

A. is reading

B. reads

C. read

D. are reading

Câu 4: My family often watch______________ every night.

A. a television

B. the television

C. an television

D. television

Câu 5: My children often spend many hours________ the computer screen.

A. in

B. among

C. on

D. upon

Câu 6: My class has ……. pen, ………eraser and two books.

A. an/ an

B. a/ a

C. a/ the

D. a/an