题目

用方框中所给的句子填空。请将正确答案的序号填在题后横线上。 Receptionist:    41   Madam? Alice: I want a single room. I booked（预定）it three days ago. Receptionist:    42  . Alice: It’s Alice. Alice White. Receptionist: Oh, yes. Here it is. You want a single room. Alice:    43   And if it is possible, I’d like a room on the ground floor. Receptionist:    44   all the rooms on the ground floor have already been taken. But we do have a nice room that overlooks the hotel swimming pool. It is on the second floor. Alice: Thank you.    如图，点A、B、P为⊙O上的点，若∠PBO=15°，且PA∥OB，则∠AOB=（ ）A．15°B．20°C．30°D．45°