Câu hỏi: UFOs mean ................flying objects.

A. unknown

B. unidentified

C. unable

D. unimaginary

Câu 1: The existence of different kinds of animals and plants which make a balanced environment is called........

A. biodiversity

B. rubbish

C. challenge

D. maintain

Câu 2: We should........all the electric appliances when leaving our room.

A. turn of

B. turn on

C. turn up

D. turn off

Câu 3: He’s really delighted with his new CD player.

A. please

B. angry

C. entertained

D. annoyed

Câu 4: Our actions express our love more than any words can do.

A. help

B. create 

C. make

D. show

Câu 5: They often go to that...............to pray.

A. market

B. hotel

C. hostel

D. shrine

Câu 6: Some tiny organisms are..........along by the currents.

A. carried

B. taken

C. flowed

D. beside