The manager ____ nothing about the matter ____ he read his secretary’s report.

He usually does his homework two hours in the evening. [ ]

Eight ________ students in our school are from countryside.

Luo Yang devoted all his life _________for China Nation Aviation(中国航天).

Do you mind telling us something about this area?— Not at all. ________ of the land in this area _________ covered with trees and grass.