—Hello, Tony , nice to meet you!—___________________!

— _______ does Earth Day come every year? —It comes on April 22.

--- Can I borrow some of your novels?--- __________. They are at your service.

---I’m going to San Francisco for a couple of days. ---_________. I wish I could get away for a while.

— People should spare no efforts to protect the environment. — ________. Air pollution does harm to our health.