"Genius" is a complicated concept, _    _ many different factors.
#93217
A
involved
B
involving
C
to involve
D
being involved
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It is no use ________ him to give up smoking. He won’t listen!
#94177
A
to persuade
B
trying to persuade
C
persuading
D
try to persuade
________ his lessons , he failed in the exam. 
#90060
A
Not reviewing
B
Having not reviewed
C
Not reviewed
D
Not having reviewed