The old man is too tired _____ go any further.[ ]A. enoughB. can'tC. toD. so-八年级英语

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• The best way __________ the work is tostart at once.[ ]A. finishB. to finishC. finishingD. finishes-
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• Dennis needs more time________ his homework tonight.[ ]A. finishing B. to finishC. finishesD. finish
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• 对调查的生物，可以有多种归类方法，如可以按形态结构，将生物归为、、和三大类。按生活环境可以分为生物和生物等。-七年级生物
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