填空题。
1. —_____ are you doing？
—I’m reading.
2.（钻石）_____ .
3. —What are you doing?
—I’m _______ a map.
4. We are _____ Green Hill.（填上合适的介词）
5. The Big Stone is ____ the hill. （填上合适的介词。）
6. —_____ is the diamond？
—On the hill.
7. You can find it at the top ____ the hill. （填上合适的介词。）
8. The lake is ____ a big diamond.（像）
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