Studies show that daydreaming contributes significantly to concentration powers and the ability _____ with others.
#94193
A
communicating
B
to be communicated
C
to communicate
D
to communicating
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 _____ to sunlight for too much time will do harm to one’s skin.
#98000
A
Exposed  
B
having exposed
C
Being exposed
D
After being exposed
    Quite well in the important exam , he came back home,    and smiling.
#92606
A
Having done; relaxed
B
having done ; relaxing
C
having been done ; relaxing
D
Done; relaxed