根据所给句子，选择最佳的应答语。每个选项只能用一次。 (     )1. Excuse me. Where can l wash my hands? (     )2. Don't hang out late in the night with those bad youngsters. (     )3. I need some shampoos to wash my hair. Could you get some for me? (     )4. Can you tell me where Tom is? I must find him now. (     )5. Shall we exchange our phone numbers so that we can call each other? A. Sorry, I don't know.  But he was here just now. B. No problem. C. Oh, there is a restroom near the bus stop. D. Of course, there's a post office on the Royal Street. E. That's a great idea! F. Sorry, I won't do it again.