-- Would you like to go to the concert with me?-- I’d love to, _________ I’m afraid I have no time.
#55167
A
so
B
or
C
and
D
but
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Tom can play the guitar, ______ he can’t play it ______. 
#55551
A
or, good
B
and, well,
C
but, good
D
but, well
Don’t get off the bus ________it has stopped.
#55561
A
until
B
if
C
because
D
though
   _______   I  know,  he  is  kind.
#55806
A
As soon as
B
As long as
C
As far as
D
As well as