Вроде не сложно, но я не понимаю эту тему... помогите пожалуйста). 3 номер

I can speak english
my father cant speak dutch
can you speak franch?
my sister cant skating
can you swim across this river?
i cant drink this milk

may i come in?
may i go to walk?
if your job is done you may go home
teacher said we may go home
doctor says I may swim already
father told me i may go to the cinema alone
i thought i may watch a tv
if you wont  wear a coat you may get sick

1 can 2 may 3 can 4 can 5 may 6 may 7 can, may 8 may 9 can 10 may

1 may  2 may 3 can 4 ? 5 may 6 may 7 may 8 can can can

i must go to the store today, cook a dinner, do my homework, go to school, write a letter to the brother
i have to go to the store today, cook a dinner, do my homework, go to school, write a letter to the brother
i had to go to the store today, cook a dinner, do my homework, go to school, write a letter to the brother