Ответ:

  1. M — Mike keeps hundreds of ebooks on his tablet and is happy to read digitally.
  2. N — Ned says he may be more interested in reading when he is older.
  3. U — Uri does not like reading a lot of text on a screen, so he prefers printed books.
  4. M — Mike reads many different things, from comics to science magazines.
  5. N — Ned has never picked up a book to read for fun.
  6. M — Mike takes his tablet everywhere so that he always has something to read.
  7. U — Uri started reading in his free time after he became a climber.

Ответ: 1) M; 2) N; 3) U; 4) M; 5) N; 6) M; 7) U.