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I like ________(gas, charcoal)better than wood．It's quicker．

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We use ________(water, fie)to cook food．

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Which season do you like ________(better, best), spring or summer?

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A special factory makes the water ________(to clean, clean)．

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Water cones ________(through, across)very long, wide pipes．

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The ________(rain, wind)blows the clouds to the land．

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There ________(is, are)no big rivers in our city．

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Water ________(come, comes)from the sea．

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It's ________(rain; raining)outside．

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There ________(is; are)a toilet here．