_________ is known to all,good friends _________ happiness and value to life.
#72470
A
It; add
B
As; add
C
It; add up
D
As; add to
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_____his father had come, his face lit up.
#74080
A
Having learned
B
When he learned
C
Heating
D
When learning
. She asked the man _______ it was true he had been a soldier before.
#72655
A
whether; that
B
that; that
C
if; when
D
what; whether