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

A. full

B. clear

C. open

D. outside

Câu 1:  Can’t you _____ your chief to let you have a holiday?

A. overcome

B. succeed

C. persuade

D. reason

Câu 2: The finance minister has not been so _____since he raised taxes to such a high level.

A. famous

B. well-known

C. favourable

D. popular

Câu 3: My employer’s ______ of my work does not matter to me at all.

A. belief

B. opinion

C. expression

D. value

Câu 4:  He will probably be awarded a Nobel prize on account of his _______ achievements in physics. 

A. exposed

B. outstanding

C. conspicuous

D. high

Câu 5: He must give us more time, ______ we shall not be able to make a good job of it.

A. whether

B. otherwise

C. consequently

D. doubtless

Câu 6:  The deep pool was so brown and weed-covered that it was almost ______.

A. opaque

B. transparent

C. solid

D. invisible