Câu hỏi: Make sure you ______ up the data on your computer, because you might get a virus.

A. back

B. store

C. save

D. copy

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: A _____ is a tube through which a person swimming just under the surface of the sea can breathe.

A. maneuver

B. photograph

C. volume

D. snorkel

Câu 3: Silence __________ the theatre as the audience awaited the opening curtain with expectation and excitement.

A. fell in with

B. came between

C. hung over

D. dropped out of

Câu 4: 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 5: We were quite impressed by the ______ students who came up with the answer to our question almost instantly.

A. absent-minded

B. big-headed

C. quick-witted

D. bad-tempered

Câu 6: Please don’t ______ a word of this to anyone else, it’s highly confidential.

A. speak

B. pass

C. mutter

D. breathe