Câu hỏi:

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

A.  correction

B.  motorway

C.  addition

D.  erosion

Câu 1:

Work on the production line is monotonous and lacks _______.

A.  variety

B.  various

C.  varied

D.  variable

Câu 2:

This is especially worrying when there are about 3,000 plants with values as medicines against cancer, AIDS, heart disease and many other sicknesses.

A. well

B. suddenly

C. particularly

D. highly

Câu 3:

Without plants, most water would run off as soon as it falls, taking away valuable soil.

A. costly

B. estimable

C. cherished

D. admirable

Câu 4:

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

A.  threat

B.  threaten

C.  threatening

D.  threateningly

Câu 5:

I'm sick of _______-heart liberal politicians.

A. blood

B. bloody

C. bleed

D. bleeding

Câu 6:

Each year about fifty hundred species of plants and animals are already being eliminated.

A.  dropped

B. removed

C.  kicked

D.  tossed