Câu hỏi: Einstein's …….is really too difficult for the average people to understand. 

A. explanation

B. knowledge

C. experiment

D. theory

Câu 1: The rivers can be…………..by chemicals. 

A. poisonous 

B. contaminated

C. flooded

D. polluting

Câu 2: Since I have been ill, my appetite has diminished. 

A. disire for exercise

B. desire for sleep

C. desire for food

D. desire for travelling

Câu 3: Ben: Would you like some more dessert?

A. Enjoy your meal!

B. No thanks, I’m full.

C. It’s delicious!

D. Be yourself.

Câu 4: Because of the increasing enrolment, the school has to employ teachers who are not…….for their jobs. 

A. qualifying

B. qualified 

C. worth 

D. skilled

Câu 5: I promptly went to sleep again. 

A. early

B. immediately 

C. soon 

D. after a while

Câu 6: Mary: How often do you go hiking?

A. Most weekends

B. I go with three friends.

C. We stay for a weekend.

D. I often go hiking with my family.