Finish your homework first, then you'll surf the Internet for half an hour.
Houses in Wuxi are now ______ expensive that ______ many people can’t afford ______ them.
I am so tired today. I swam _____ the river in the morning and I walked ____ the forest in the afternoon.
He is businesslike and is often _______. I hope he will have more _______ at his business.
We must the teacher says in class.
You used to be a top student. You shouldn’t ___________.