would you please-------in the room?

would you please_______in the room?
a.not smoke
b.not to smoke
c.not smoking
d.not smoked
nanjing is fomous for an old city_____a long history.
a.has
b.with
c./
do you agree ______me?
a.to
b.on
c.with
d.at
he _____at home.it's holiday today.
a.may be
b.may
c.maybe
d.be