Câu hỏi:

Man and most animals need a constant supply of water to live.

A. uniform

B. changeless

C. true

D. steady

Câu 1:

But we can stop adding the problem while scientists search for answers, and laws are passed in nature’s defense.

A. frisk

B. rifle

C. track

D. examine

Câu 2:

Choose the word whose main stress is placed differently from the others in each group

A.  correction

B.  motorway

C.  addition

D.  erosion

Câu 3:

He says he'll tell the authorities but it's just an empty ______.

A.  threat

B.  threaten

C.  threatening

D.  threateningly

Câu 4:

If you don't have anything _______ to say, I'd rather you kept quiet.

A. construct

B. constructors

C. constructive

D. construction

Câu 5:

He owns a series of _______ across the US and beyond.

A. industries

B. industrials

C. industrious

D. industrialize

Câu 6:

Work on the production line is monotonous and lacks _______.

A.  variety

B.  various

C.  varied

D.  variable