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

She looks very sad. I want to help her, but I just don’t know ____ to do it.

---What’s your phone number? ---________ 7284587.

----What does Mrs Li teach? ----She is______  English teacher, and she teaches ______ English very well.

Let____help____.