"Who will pick up from school today?" "What happened?" It's 5:00 p.m., but the person who picked us up from school hasn't come yet. "Let's walk home from school!" A said to us. "But 3000 metres from school to home! Can we walk back?" I said. "Our parents walk home from school every day. And my father said,'His school is about 4000 metres away from home.'" B said. "OK! Let's go!" D said. Then we're walking home.
The average speed of the four of us is 50 meters per minute. After an hour, we finally got home. We're tired.
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