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

She can hardly write her own name, ______?

Rita, your Chinese is very good._____ have you been in China? —Since I was five. [ ]

May I smoke here，please?—I am afraid you ．This is a non-smoking area．

Don’t worry, Sir. I’m sure I can run _________ to catch up with them.