On the annual International Volunteers Day, the world ______ the work of millions of people who give their time to help others.
#10866
A
abolishes
B
assesses
C
accompanies
D
acknowledges
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 In ____, he began to learn Russian, when he was in ______. 
#12067
A
1970; the 50’s
B
the 1970; his 50s
C
the 1970s; his fifties
D
1970s; his fifties
All of them felt it necessary that they______ __the meeting. 
#12412
A
attend
B
would have attended
C
attended
D
were to attend