Расскройте скобки, употребив нужную степень сравнения прилаг/наречия

1.it's one of (difficult)questions in this test.
2.who knows him (well) than you?
3.we have (little)interest in this work than you.
4.health is(good) than wealth usually
5.today you worked (slowly)than usually
6.which is (long) day of the year?