——Hello,I'm John Taylor,the General Manager.And you must be......

——                        

—Hello, May I speak to Zhang Hua?

—___________________I'm afraid he isn't in at the moment.

—It's raining so heavily outside. I'm terribly anxious about my son's safety.

   —                      .

—                

— It's dark brown.

 I'm afraid I won't be available then. I ______ a friend off at five this afternoon.

—                       

— I'm afraid not. But I'll be free this afternoon. 

— It's getting dark. I'm afraid I must be off now.

— OK. _________

— I think riding a bike anywhere is healthy and convenient, but I'm afraid the bike would be stolen.
— ______________ .

— Could you be so kind as to turn down that rock “n” roll? I'm preparing for tomorrow's meeting report.
— ______________.

 ---Hello, I'm Harry Potter.

 ---Glad to meet you. I'm Miller. But __________.