Câu hỏi:  The deep pool was so brown and weed-covered that it was almost ______.

A. opaque

B. transparent

C. solid

D. invisible

Câu 1: Much to their surprise everything went according to _____.

A. arrangement

B. proposal

C. agreement

D. plan

Câu 2:  Because of the fine weather, we had all our classes in the ______ air.

A. full

B. clear

C. open

D. outside

Câu 3: Trains stop here in order to ______ passengers only.

A. pick up

B. pull up

C. pull in

D. get off

Câu 4: My employer’s ______ of my work does not matter to me at all.

A. belief

B. opinion

C. expression

D. value

Câu 5: The office lifts are out of ______ again.

A. operating

B. order

C. work

D. working

Câu 6:  He will probably be awarded a Nobel prize on account of his _______ achievements in physics. 

A. exposed

B. outstanding

C. conspicuous

D. high