阅读理解。 This is a book. It's an English book. It is my English book. That is a dictionary. Is it Lucy's dictionary? No, it isn't. It's Tom's dictionary. Her dictionary is in her bag. Look! What are these? They're pens. Are they Tom's pens? No, they aren't. They are Mike's. 1. What's this? It's _______________. 2. What's that? It's _______________. 3. Is it Tom's dictionary? _______________. 4. Where is her dictionary? ______________. 5. Whose pens are those? ________________.