Fill in the blanks with the suitable conjunction:
The concert was cancelled, __________ we went to a movie instead.
so
but
or
I heard a noise _____ I turned the light on.
because
when
and
We were getting tired _____ we stopped for a rest.
The classes are quite difficult _____I'm doing well.
as
This drug has serious side effects ________ its sale has been banned.
unless
This product is very good and cheap ______it does not sell.
otherwise
yet
She has not called ______ she left last week.
since
Samir is worried ______ he is late for an important meeting.
although
You will not be granted leave _______ you apply in time.
therefore
if
Sailing in summer is great, ______ I don't have a sailing boat.