－Who taught _______ Chinese, Jerry?－_____ classmates. They helped me a lot.  

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

— He, together with his parents ______going to visit Shanghai in July. How about you?— I'm afraid I have to stay at home _   _.

—Look ,that’s Mike,your classmate. --Yes,Let’s go and say hello to_________.

The books on my table are cheaper than_______ on yours.