Jack sat alone on the bus ride home. All his friends were 1 their homework excitedly, but Jack kept silent.
When the bus stopped, he ran home, 2 his schoolbag on the floor, and walked straight to his bedroom.
"Jack?" Grandpa's 3 called out. "Was that you?"
Jack stopped 4 he closed his bedroom door. "Yes, Grandpa, it's me."
Grandpa came, carrying a 5 . "You don't sound okay," he said as he ate it.
Should Jack tell Grandpa the truth? He quickly 6 they should build something with an adult together this weekend. The students needed to make a 7 to explain how their homework had gone.
Grandpa listened quietly. "8 are you so unhappy?"
Jack felt his9 and anger rising inside him. "Because I don't have anyone to help me." He sounded so sad and angry.
Grandpa raised his eyebrows (眉毛) 10 . "What am I?" he asked gently.
Jack surprised. "You'd finish homework with me, Grandpa?"
"Sure, I would," Grandpa said. "Just let me finish this sandwich."
Jack's heart seemed so 11 that he thought it would float (漂浮) away. He rushed to the schoolbag and 12 his homework paper. Then, they studied hard and made a list of ideas. Finally, they 13 to build a cardboard robot from old boxes. They used almost everything they found. Grandpa helped a lot and he 14 found a box of eyeball stickers (贴纸).
When they finished, Jack looked at their newly-built one. He couldn't stop smiling. "I think it's the best 15 I have ever built. Now I have to write my report," Jack said, hugging Grandpa. "Thank you, Grandpa. I had a lot of fun."
