根据首字母提示补全对话。
A: Do you like 1. a________?
B: Yes, dogs are my 2. f________.
A: 3. W________ do you like dogs?
B: Dogs 4. c________ play with me. They also can understand (理解;懂) me. And dogs can 5. h________ people. What do you like?
A: I like birds. They can fly and sing.
1. ________ 2. ________ 3. ________ 4. ________ 5. ________