A. It is just a joke. B. My price is cheap. C. I am convenient. D. I am not busy.
A. Hello, This is Tom speaking. How can I help you? B. I am Tom. C. I want to call Tom. Is he in? D. It is Tom speaking.
A. praise B. regret C. congratulaiton D. thanks
A. make a living B. produce money C. live a happy life D. study well
A. a common letter B. a kind of email C. a common envelope D. a red envelope