— Has Tom finished his homework yet? — I have no idea, he _____ it this morning.A．was doing B．didC．h

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• . ---What seems to be the trouble? ---I _______ pretty tired for the past few days and I think I ___
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• --- Don’t waste any paper, because our forests ____ every day. ----Sorry, I didn’t know that.A．decre
• --I'm not finished with my dinner yet. --But our friends__________for us.A．will waitB．waitC．hav
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