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18. ---Why don’t you go out to play, Rose? ---I’m afraid I can’t. I have much homework . A. do B. does C. doing D. to do 19. The problems _________ difficult ________ students can solve them. A. so; and few B. so; that little C. so; that few D, so; that a little 20. I have ____________ homework to do and I’m _______ tired now. A. much too; too much B. too much; to C. much too; much too D. too much; much too (责任编辑：admin) |