Boys, don’t touch the machine, or you may hurt _________.

There _____ a pen, two pencils on the desk.

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

Recently a debate about ______is real beauty has been raised. People are pushed to think some questions like ______ is better,artificial beauty or natural one.

Look, what have they done? —Sorry. I think if I __________ another chance, I’ll do it better.