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The Mars rover sent a clear signal at 8:00. Its antenna can send a signal only w…
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Tom found a wet umbrella at the door. It ___ (not be) Lily's, because she went t…
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Look! The rocket has just landed, and the astronaut is stepping out of it. He m_…
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The animal has fins and lives in water. It ___ be a bird.
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英语
词汇题
The astronaut is on Earth now, so he c___ be on the moon.（不可能）
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英语
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Read and finish the tasks. 阅读短文，完成两个任务。 Joe is in the b…
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