根据句意和括号内所给单词的适当形式填空

  1Watching too much TV is( )(harm)to you2I hope that all your troubles will( )(appear)soon3The camera was one of the greatest（ ）（invent）in the 19th century4Mind your table manners。
  It is ( )(polite)to talk with your mouth full5Deagon Boat Festival is one of the Chinese( )(tradition）festival6If you are( )(happy)with your results,you cantake the exam again 7When the fire happened。
  the firemen hurried to carry the child to( )(safe)8(对话）——You look slimmer and( )(healthy）then before9It takes( )(little)time to go there by underground than by bus10It is the( )(light)and tinnest of all the e-books in the world11 Mr brown spent lots of money buying this( )(value)painting12The boy sat down excitedly because he answered the difficult question( )(correct)13There are many( )(different)between the two languages。
  14It difficult for me to( )(memory）the grammatical rules。