Can i get some with english ?

with mr. huang assistance, we learned to paddle a canoe
a. mr. huang's
b. mr. huangs'
c. mr. huangs's
d. mr. huangs

after several hours worth of work, she finished the project.
a. hour's
b. hours'
c. hours's
d. houres

after professor hess lecture, we asked questions.
a. hess
b. hess'
c. hess's
d. hesses

thursday meeting has been postponed until friday.
a. thursday's
b. thursdays'
c. thursdays's
d. thursdays