Câu hỏi: This_______disease caused a lot of complications during the treatment procedure.

A. situation

B. difficult

C. life-threatening

D. weak

Câu 1: The waste water from bath, showers, sinks and_______, and rainwater can be collected in a tank.

A. linguistic

B. official

C. dishwasher

D. operate

Câu 2: We all regard pollution as a.......... matter to human beings.

A. solemn 

B. great

C. serious 

D. huge

Câu 3: Because of people’s______ with the environment, many kinds of plants and animals are becoming rare.

A. supply

B. survival

C. influence

D. interference

Câu 4: In military, A.I. robots are used to _______ dangerous environments containing explosives or contaminated by nuclear weapons.

A. change

B. explore

C. fix

D. borrow

Câu 5: She finally achieved her_______ of visiting the USA.

A. target

B. objective

C. desires

D. ambition

Câu 6: We kept in _______for a while after college.

A. touch

B. pay

C. well

D. chose