— Must we finish our homework today?— No, you ________.A．can’t B．mustn’t C．don’t have to-八年级英语

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• 生物圈中不可缺少的生物是（）A．绿色植物、动物B．绿色植物、细菌和真菌C．绿色植物、人类D．动物、细菌和真菌-生物
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