As a result of destroying the forests, large ______ of desert ______ covered the land.
A.number; hasB.quantities; hasC.number; haveD.quantities; have在线课程D
解析：
考查主谓一致。Large number of 后面要跟可数名词复数，而desert是不可数名词，排除A,C；
large quantities of+不可数名词作主语，谓语动词和quantities保持一致，要用复数。所以选D。