Câu hỏi: 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 1:  The deep pool was so brown and weed-covered that it was almost ______.

A. opaque

B. transparent

C. solid

D. invisible

Câu 2: When there was a short ______ in the conversation, I asked if anyone would like anything to drink.

A. fall

B. balnk

C. wait

D. pause

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

A. pick up

B. pull up

C. pull in

D. get off

Câu 4:  The final ______ of the play will take place on Monday.

A. performance

B. view

C. sight

D. happening

Câu 5:  Because of the fine weather, we had all our classes in the ______ air.

A. full

B. clear

C. open

D. outside

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