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Where were you b________ 4∶00 and 6∶00 yesterday afternoon?

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The Class Four students went to West Lake last Sunday e________ Wang Lin and Li Lei.

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Could you show me the word b________ with“f”?

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The beautiful s________ of Hawaii attracts millions of visitors all over the world．

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We’ll try to finish the work as soon as p________.

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We must stop the factory from pouring w________ water into the fiver or the lake.

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Planting more trees can make our city g________.

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It’s not good to spit in a p________ place.

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Please keep rubbish in a bag until you can put it in a d________.

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Everyone should make a c________ to improving our environment.