since water covers much of the earth ,he knew we should keep the seas clean.为什么用knew

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• since water covers much of the earth ,he knew we should keep the seas clean.为什么用knew
• since water covers much of the earth ,he knew we should keep the seas clean.为什么用knew
• "对.感兴趣"汉译英是be interested还是For...Interested in
• 1.the food pyramid show us _________of each kind of food we need every day a.how much b.how manyc.how d.what 2.too much cola is _________unhealthy diet a.an b.a c.some d./3.you mother walks as ________as hersa.slow b.slower c.slowly d.slowier4.bake the cake _______the oven_________FIVE MINUTES.a.in,with b.at.for c.in,for d.on,at