Question

The pet dog found his master. He said to the master,"It' me." (In a catroon)

1. It's me.
2. This is me.
3. I'm me.
4. That's me.
(Can the pet use only #1? What about the other expressions?)
--------------------------------------
The master said, "Is that you?"

5. Is that you?
6. Is it you?
7. Is this you?
(Can the master use #5 alone? What about the other sentences?)

Answer 1

#1 is the best, but #2 could work, too. #s 3 and 4 are different.

#s 5, 6, and 7 all would work for the master's question.