Read the following passage and choose the best answer for each blank.
Paper can be recycled by reducing it to pulp and (1) it with pulp from newly harvested wood. As the recycling process (2) the paper fibers to breakdown, each time paper is recycled its quality decreases. This means that (3) a higher percentage of new fibers must be added, or the paper down cycled (4) lower quality products. Any writing or coloration of the paper must first be removed by deinking, which (5) removes fillers, clays, and fiber fragments.
Almost (6) paper can be recycled today, but some types are harder to recycle (7) others. Papers coated with plastic or aluminum foil, and papers (8) are waxed, pasted, or gummed are usually not recycled (9) the process is too expensive. Gift wrap paper also cannot be recycled (10) to its low quality.