A person , when_________,can often do what is normally beyond his ability.
#90324
A
challenged
B
challenges
C
challenging
D
to challenge
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The little time we have together we try ________ wisely.
#98598
A
spending it
B
to spend it
C
to spend
D
spending that
He did nothing but ________walk in the street. 
#95370
A
taking    
B
take    
C
to take    
D
took