一If you like I can do some shopping for you.一That’s a very kind _____.

--- Excuse me, could you tell me the way to the nearest bookstore? --- I’m sorry. I’m a stranger here. --- ___________.

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

—Are you going to join us ? —________.

—You’d better not put too much salt in dishes, Granny. It’s bad for our health.—   .