【推荐1】用名词性从句改写下列句子
1. How many stars are there in the sky? Children often wonder.
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2. When and where will the meeting be held? We will discuss it right now.
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3. He was ill in bed. He was absent yesterday.（用reason合并句子）
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4. The moon travels around the earth. It is a truth.
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5. How did he come up with the idea? This doesn’t matter.
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6. How excited were they when they received these gifts? You can’t imagine it.
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【推荐3】________ the flight will be late.
航班有可能会晚点。