Speaker A: Hello! Professor Freeman's secretary. Can I help you Speaker B:______

A．Hello! Can you find Professor Freeman for me

B．Yes. I hope you can help me. My name is John Smith.

C．Good afternoon. I'd like to make an appointment to see the professor on Thursday, please

D．Thank you. Professor Freeman knows me well.

按照“啊”的音变规律，分析下列句子末尾“啊”（原句的“啊”用括号表示）的变读情况，并分别写出相应的汉字。（1）这花开得多美（）！（2）同学们都来（）！（3）真是个大英雄（）！（4）这是一本多么好的书（）！（5）多么美丽的花（）！（6）这是哪儿（）！