It is thought that one billion people in the world,_____ is half the world’s workers, earn their living by farming.

I don’t think it is teachers who ______ for giving students too much pressure.

 She explains English grammar ___clearly _____even I can understand it.

—My daughter lived in France for five years and now she's working in a foreign company.—______is no wonder that she speaks such excellent French.

______ make her father angry, Joan didn’t tell him her poor grade.