Unit 16 A polite request一,洗耳恭听。( )1. A. How do you do?C. Never mind.B. Good luck.D. Thats nothing.( ) 2. A. So Should I.C. I think so, too.B. Neither should I.D. I think not.( ) 3. A. Yes, I could.C. I havent.B. No, I couldnt.D. Here you are.( ) 4. A. Yes, you can.C. Sorry, I dont have time.B. No, you cant.D. Sure, go ahead.( ) 5. A. Yes, I am.C. It doesnt matter.B. Im sorry, Miss li.D. I think youre right.( ) 6. A. Youd