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

Li Mei is the student _________ handwriting is the best in our class.

Mrs Green are very grateful to the neighbour _____ helped her child out of the fire．

What did your math teacher say ?— She said I was ____________.

You can find ______ island and an old man lives there ________.