Perhaps we will live in _________ dome on Mars.

Which one do you want to buy, an iPod touch 4, an iPad 3 or an iPhone 5?—______. They are too expensive.

Daniel is very modest. He never ___________ before his friends.

Mr Smith was bornDecember, 1950. He worksa farm.[ ]

The Internet is a wonderful discovery,________of great significance to people’s lives.