句型转换。
The earth is big, but the sun is much bigger.（改为同义句）
The sun is _____ _____ the earth.
We are both good students.（改为同义句）
_____ ____ ______ are good friends.
We often go hiking in May.（对画线部分提问）
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I think Lesson 10 is more interesting.（改为否定句）
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I sleep nine hours every night.（对画线部分提问）
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