把句子补充完整，再加上标点符号。 

1．                  觉得                                                        

2．请你                                                                          

3．雪花                                                                          

4．                                                                  真热闹呀

扁平胸可见于

A．妇女

B．老年人

C．瘦长体型者

D．小儿

E．肥胖者