短文阅读，选出适当的词填入括号里：
Hello, I’m Sam. I am a _⑴__. I am big and fat. I have a __⑵__. My __⑶_ is short. My_⑷_ are long. I have four __⑸__. I like __⑹___ with my yellow __⑺__.
⑴A. dog        B. dogs       C. mouse
⑵A. body      B. bodys       C. the body
⑶A. tail      B. tails       C. the tail
⑷A. ear       B. ears        C. an ear
⑸A. leg        B. legs        C. foot
⑹A. run        B. play        C. jump
⑺A. ball       B. balls      C. a ball