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44.  The last month of the year is December。

43.  We seldom go to a restaurant to have dinner. We usually have dinner at home.

42.  We gathered for the celebration of her birthday last Sunday.

41.  Ways must be found to prevent the rivers from being polluted .

40.  Since he isn’t here, would you mind giving him a message ?

39.  Our newly-built library is six-storeyed , twice the height of the old one.

38.  I think it is a suggestion with little practical value.

37.  The manager usually leaves some business for his secretary the deal with.

36.  Smoking is now forbidden  in public places in more and more cities.

35.  When we heard the sad news, we were in deep sorrow .