Grace's neighbor, Simon, goes on a trip for a week. Before he leaves, he gives Grace a spare key.
格蕾丝的邻居西蒙要出门旅行一个星期。临走前，他给了格蕾丝一把备用钥匙。
"Please water my plants while I'm away," Simon says. "This key opens the back door."
“我不在的时候，请帮我给植物浇浇水，”西蒙说，“这把钥匙能开后门。”
Grace puts the spare key on the hook by her front door. She hangs it next to her own house key.
格蕾丝把备用钥匙挂在前门边的挂钩上，挂在她自己的家门钥匙旁边。
Both keys are plain and silver. They look almost the same.
两把钥匙都是普通的银色，看起来几乎一模一样。
On Tuesday morning, Grace grabs a key from the hook. She walks next door.
星期二早上，格蕾丝从挂钩上取了一把钥匙，走到隔壁。
She puts the key in Simon's back door. The key does not turn.
她把钥匙插进西蒙家的后门锁里。钥匙转不动。
She tries again, but the door stays locked.
她又试了一次，门还是锁着。
"That's strange," Grace says. "Simon told me this key works."
“真奇怪，”格蕾丝说，“西蒙说这把钥匙能用的。”
She checks her pocket. She has only one key.
她摸了摸口袋，只有一把钥匙。
She picked up her own house key by mistake.
她错拿了自己的家门钥匙。
Grace walks home and takes both keys off the hook. She carries them both next door.
格蕾丝走回家，把两把钥匙都从挂钩上取了下来，一起带到隔壁。
She tries the first key. It does not fit.
她试了第一把钥匙，插不进去。
She tries the second key, and the door opens.
她试了第二把，门开了。
"There it is," Grace says. "That was the right key."
“在这儿呢，”格蕾丝说，“这才是对的钥匙。”
She waters every plant on the porch and in the kitchen. She checks the soil as she goes.
她给门廊和厨房里的每一盆植物都浇了水，边浇边检查土壤。
Before she leaves, Grace ties red string around Simon's key. Now she can see which key is which.
离开之前，格蕾丝在西蒙的钥匙上系了一圈红线。这样她就能分清哪把是哪把了。
She locks the door and puts both keys in her pocket. Then she walks home.
她锁好门，把两把钥匙都放进口袋，然后走回家。
