Are you going to buy a camera? —–Yes. But there are so many kinds that I can’t decide __________ to buy.

Recognized as ________ world cultural heritage by the United Nations in 2002, paper cutting is ________ practice which originated in ancient China.

Lin Kai, hand in your homework, please.—Oh, sorry. I ______ it at home this morning.

Is this book yours ? – No it’s his , is inbag .

This is _____banana ,and that is _____apple.