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

A. adding

B. pushing

C. piling

D. forming

Câu 2: He was pleased to have the _____ to hear such a fine musician play his favourite piece of music.

A. occasion

B. possibility

C. fate

D. opportunity

Câu 3: He _____ in the doorway in order to light his cigarette.

A. arrested

B. entered

C. paused

D. settled

Câu 4: He is paving the garden _____ with flat stones of various shapes.

A. track

B. lane

C. path

D. alley

Câu 5:  This blue door was _____ painted green.

A. lastly

B. firstly

C. originally

D. presently

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

A. opaque

B. transparent

C. solid

D. invisible