请教两道语法题谢谢

老芋头

在OG VERBAL分册中，19题中CHINESE, THE MOST ANCIENT OF LIVING WRITING SYSTEMS,CONSISTS OF TENS OF THOUSANDS OF IDEOGRAPHIC CHARACTERS, EACH CHARACTER A MINIATURE CALLOGRAPHIC COPMPOSITION INSIDE ITS OWN SQUARE FRAME.  EACH后面的CHARACTER是谓语吧？若是的话EACH做主语为什么不加S，不是的话后面这句话的谓语是什么？还有20题，为什么句子不可以改成这样DECLINING VALUES FOR FARM EQUIPMENT AND LAND,WHICH FARMERS USE AS COLLATRAL TO BORROW AGAINST TO GET THROUGH THE HARVEST SEASON, ARE GOING TO FORCE MANY LENDERS TO TIGHTEN OR DENY CREDITS THIS SPRING中间WHICH那段话有什么错误吗？