start early和at the edge of the woods

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• 1.Earth is becoming more and more __________ (crowd).2...__________ (hope),we can start again.3.This pair of boots looks very ____________ (fashion).4.There will be no ___________ (pollute) on Mars.5.____________ (science) are working hard to make the dream become true.B.根据所给中文和句意,填入正确的单词.6.___________(地球引力) will be a problem for the early settlers on Mars.7.Humans need food,water and air to __________(生存)8.Power pack can __________(提供) energy for the
• start early和at the edge of the woods
• 将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空一,将下列句子改成否定句和疑问句1) They had to get up early yesterday.2) I was able to go to the meeting.3)The teacher will be able to come tonight.二,用can,may,must,can't,mustn't,needn't填空1) Must I come tomorrow?--No,you____2)____your brother swim?--Yes,he____.He is a good swimmer.3)We___ start now.We don't want to be late.
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