My teacher felt unpleasant ...........my class went to school late

my teacher felt unpleasant ...........my class went to school late
a)however
b)although
c)because
d) therefore
she never cheats in exams,.....? 
a)does she
b)doesn't she 
c)did she
d)didn;t she
unless i have a quiet room i.........to do any work
a)won't be able 
b)can't be able
c)wouldn't be able 
d)am not able
ken will be there...........early february......may 
a) in/in
b)from/to
c)in/to
d)with /to

when i saw him ,he was busy .......his car
a)wash
b)to wash
c)washing
d)washes