Parenthetical Expressions Practice

Some expressions that are often used parenthetically are as follows.
as a matter of fact
as a rule
as you know
besides
by the way
consequently
for example
fortunately
furthermore
however
in any case
in addition
indeed
in fact
in my opinion
moreover
needless to say
nevertheless
no doubt obviously
of course
on the contrary
on the other hand
subsequently
therefore
thus
to be sure
to say the least
to tell the truth
unfortunately