Choose the best options to complete the sentences

1. The air in the room was
   [smoky|wet], not fresh at all.
2. The
   [operation|process] was not easy but now the patient is recovering.
3. It is
   [safe|dangerous] to eat so much sugar.
4. John is a student of a
   [medical|medicine] college.
5. People should get rid of their
   [useful|harmful] habits.
6. The
   [length|height] of the football field is 110 metres.
7. The atmosphere was
   [really|generally] nice. We could see
   [pleasant|angry] and  
   [furious|smiling] faces everywhere.
8. Doctors have little
   [news|information] about this disease.
9. He never does anything the way he should do. What a
   [wise|brainless] creature he is.
10. Lucy's
    [disease|illness] is not very serious but it is very
    [laughable|unpleasant].