(2013·陕西西北工大附中模拟)—What about the price of these washing machines?—They are equal in price to, if not cheaper than，________ at the other shops in the street.

—I can't find         beef in the fridge. Shall I buy some? —Yes, please.

I can’t find my pen. Could you help ______ find it?

Do you _____________ they play the same song again and again over the radio?

—Have you heard about Apple iPhone 4?—Sure．It is very hot these days．I’m thinking about getting _______．