As a result of destroying the forests, large ____ of desert ____ covered the land.
A.number; has | B.quantities; has | C.number; have | D.quantities; have |
_____people who learn Engiish as a foreign language ________more than 750 million.
A.A number of... reach | B.The number of...come to |
C.The number of... reaches | D.A number of...comes to |
Rather than ________at home watching TV, I'd prefer_______in the office.
A.working...staying | B.working...stay |
C.to work...stay | D.work...to stay |
To the parents' worry, some middle school students are _______ computer games and completely forget their studies.
A.crazy about | B.burying in | C.very proud of | D.tired of |
His sister left home in 1998, and _______ever since.
A.has not heard from | B.had not heard from |
C.has not been heard of | D.had not been heard of |
I couldn't do my homework with all that noise
A.to go on | B.goes on | C.went on | D.going on |