阅读材料, 从每小题所给的四个选项中选出最佳选项。It's 2: 30 in the afternoon. The house is quiet(安静的). " Tom?" Mom says. No one answers(没有人回答).
Mom comes to Tom's room. He is not on the bed, but his model plane is on the desk." He is not in his room, and he is not in the yard," Mom thinks. Then Mom comes to his grandparents' room. Tom likes to play with his grandpa's tape player, but he is not there. Mom looks for Tom everywhere. Where is Tom? Mom is worried. She wants to call Dad. She comes to the living room to get the phone." What's that?" Mom sees something black under the sofa. Oh, it's Eric, Tom's dog. It loves sleeping(睡觉) there. What is next to Eric? It's Tom!