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: After sitting in the sun for too long my skin began to _______.

A. peel

B. strip

C. bake

D. scorch

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: 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 4: The child enjoyed _____ up the wooden bricks then knocking them down.

A. adding

B. pushing

C. piling

D. forming

Câu 5:  He will probably be awarded a Nobel prize on account of his _______ achievements in physics. 

A. exposed

B. outstanding

C. conspicuous

D. high

Câu 6:  Because of the fine weather, we had all our classes in the ______ air.

A. full

B. clear

C. open

D. outside