.I have no idea________is better, so I took of them.

We can use QQ to talk with each other on the Internet.—Really? Will you please show me it?

In the past few years there _________great changes in my hometown.

Eric, isn’t this book yours?—Yes, it used to belong to _________, but from now on it isn’t.

What do you think of the 3D film Titanic last night?– It was _________. I enjoyed it a lot.