09：Pat's Birthday
循序漸進學英語系列9：Pat's Birthday（兒童英語教材典範之作）
21.
1. So everyone/everybody could eat the cake.
2. Tom. / Tom did. / Tom ate four pieces of cake.
3. They gave her a book about parrots.
4. There are seventeen or eighteen children (in the living room).
5. She is in the kitchen.
6. Yes, they are.
7. Yes, he did.