(3)
1-biggest
2-the most wide-spread
3-the biggest,the most importrant
(4)
1)low-lower-the lowest
2)interesting-more interesting-the most interesting
3)strong-stronger-the strongest
(5)
1-will visit
2-will see
3-will find
4-will buy
(6)
1-was
2-was
3-liked
4-is