Advertisements _______ these facts have been printed in newspapers and magazines but have not helped much.
#96120
A
based on
B
base on
C
to base on
D
basing on
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This is the best way ______ I have thought of ______ the problem.
#94238
A
that; solving
B
in which; solving
C
which; to solve
D
/; to solve
I am sorry to have you ________ so long.
#95471
A
waited
B
to wait
C
waiting
D
to be waiting