1/ 1. is
2.are
3.am , am
4. is
2/ 1. do
2.will you buy
3. had
4.went
5. takes
6. will help
3/ 1. can
2. must
3. may
4. must
5. can
4/ 1. my cousin doesn't want to become a doctor
does my cousin wants to become a doctor?
2. our team did'nt win the match
did our team win the match?
3. they will not come to see us tomorrow
will they come to see us tomorrow?