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。 C. covered, fallen D. covering, fallen 25. Lessons ____easily were soon forgotten. A. to learn B. learn C. learned D. learning 26. The wallet ____several days ago was found ____in the dustbin outside the building。A. stolen, hidden B. stealing, hiding C. stealing, hidden D. stolen, hiding 27. A person _____a foreign language must be able to use the foreign language, ______all about his own. A. to learn, to forget B. learning, to forget C. to learn, forgetting D. learning, forgetting 28. ___different kinds of pianos, the workers farther improved their quality. A. To produce B. Being produced C. Produced D. Having produced 29. The students in the university are all taking courses ___a degree. A. ing to B. going to C. leading to D. turning to 30. Many things _____impossible in the past are very mon today. A. consider B. considering C. considered D. be considered 31. ___many times, he still couldn’t understand. A. Having been told B. Having told C. He having been told D. Telling 32. The old sick lady entered the hospital, ____her two sons. A. to support B. supporting C. supported by D. having supported 33. China is one of the largest countries in the world, _____9. 6 million square kilometres. A. to cover B. covered C. covers D. covering 34. ____and happy, Tony stood up and accepted the prize.A Surprising B. Surprised C. Being surprised D. To be surprising 35. The visiting Minister expressed his satisfaction with the talks,____ that he had enjoyed his stay here.A. having added B. to add C. adding D. added 36. “Can you read?” Mary said ____to the notice. A. angrily pointing B. and point angrily C. angrily pointed D. and angrily pointing 37. _____ the position, John handed it to the teacher and went out of the room. A. Writing B. Having written C. Written D.