Studies show that the things that contribute most to a sense of happiness cannot be bought，______ a good family life，friendship and work satisfaction.

Many people cut down their daily spending in order to ____ the financial crisis(金融危机). 

He came to my class every week, but his attitude _______he was not really interested in the subject.

When the winter _____ , all the construction works in northern China have to be stopped . 

______ the kids have left home , we’ve got a lot of extra space.