It is reported that North Korea once agreed to _________its neclear program in exchange for economic aid and security guarantees.
#10768
A
devote
B
abandon
C
contribute
D
adapt
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The survey shows that ______ of the population in the country ______ adults. 
#14412
A
three fifths; is
B
three fifths; are
C
three fifth; are
D
three fifth; is
To be honest,it is Jack as well as his two classmates that________for the broken vase.
#11959
A
is to blame
B
is to be blamed
C
are to be blamed
D
are to blame