问题补充:
Since the forest has been destroyed by a big fire, a large of trees to be planted on the mountain.
A. number; has
B. amount; has
C. quantity; have
D. sum; have
答案:
A. number; has
B. amount; has
(答案→)C. quantity; have
D. sum; have
解析:第一空考查短语的用法:tree是可数名词,可以用a large number of或a large quantity of修饰,如果是A项,第二空应该填have,C项正确,因为a large quantity of后面修饰可数名词复数谓语用复数。选C。