Have you ever _____ the Great Wall —Yes, I have.

Do you like giraffes— Yes， I do. I think they’re __________.

Who’s that over there, Is it Jane—No, It ________ be Jane. She is ill inhospital today.

It is said that many kids are worried about the year 2012, they think the earth will be destroyed by disasters.

How is your cousin, Andy—He lives abroad, so I _________ ever see him.