With trees and grass_____ about 35% of the urban area,the city of Hefei has taken on a new look.
China always plays ___ active part in fighting against ___natural disasters. A. /; the B. an; the C. an;/ D /; /
It was in the lab was in the charge of Mr white they did the experiment.
of the speech, he took out his novel to read.
At the end of last class, the English teacher requested that the homework this morning.
A number of methods been used, but the number of animals still small in the forest.