I have ____________ homework to do and I’m _______ tired now.

First, we should know good service sells our products

More and more people are willingto______part of their incomes to the school children in the poverty areas.

He began to take political science __________ only when he left school.

Have you ever heard of Cao Wenxuan, a writer from Jiangsu—Of course. _________, he is a good friend of my father’s.