Câu hỏi: His work ______ new ground in the treatment of cancer. It is now giving many cancer victims hope of complete recovery.

A. broke

B. found

C. dug

D. uncovered

Câu 1: The climate is not dry at all; in fact, they have ____ of water.

A. a redundancy

B. an abundance

C. a deficiency

D. a mixture

Câu 2: The world’s biodiversity is declining at an unprecedented rate, which makes wildlife ________.

A. prosperous

B. vulnerable 

C. prefect

D. remained

Câu 3: My cousin was nervous about being interviewed on television, but he ______ to the occasion wonderfully.

A. raised

B. rose

C. fell

D. faced

Câu 4: Daisy has spent the last two weekends _____ hundreds of photographs so that she can put them in separate albums.

A. playing at

B. sorting out

C. cutting off

D. filling up

Câu 5: A true relationship is thought to be a friendship that may__________through changes in the lives of the friends.

A. entail

B. remain

C. endure

D. continue

Câu 6: My father is in_______ of 30 engineers and 80 workers.

A. pressure

B. leadership

C. impression

D. charge