问题
选择题
One piece of work of _____ United Nations is to help _____ poor in _____ developing countries.
A．/, the, /
B．/, the, a
C．the, the, the
D．the, /, the
答案
答案：C
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One piece of work of _____ United Nations is to help _____ poor in _____ developing countries.
A．/, the, /
B．/, the, a
C．the, the, the
D．the, /, the
答案：C