Bingo is a clever ________.Its owner is Mr. Smith. It comes into the room. It wants to________on the _____________. But Mr. Smith is reading a ________ on the sofa. Bingo thinks hard. Then it goes to ________ room and holds Mr. Smith's_________in its___________, and barks to him, "Wow-Wow- Wow!" Mr. Smith thinks the dog wants to go out for a _____. So he puts on his cap and goes out. But the dog doesn't go ___________ him. When Mr. Smith comes back, he sees the dog _________ on the sofa.