1)
1.is 2.is 3.am 4.are 5.are 6.is 7. am 8. are 9.is 10.are
2)
much-more-most,busy-busier-the busiest,comfortable-more comfortable-the most comfortable,big-bigger-the biggest,interestin-more interesting-the most interesting,little-less-the least,wide-wider-the widest
3)
1.We dont discuss a lot of questions/Do we discuss a lot of .....? 2.The engineer didnt work at that factory last year/Did the engineer worked .....? 3.The students wont take their exams in two days/Will the students take ......? 4.They werent in London three years ago/Were they in London three years ago? 5.Peter doesnt have(или hasnt) two sisters and a brother/Has Peter two sisters........?(или Does he have two sisters and a brother?)