题目内容
The factory produces half a million pairs of shoes every year, 80% ________ are sold abroad.
of which
which of
of them
of that
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题目内容
The factory produces half a million pairs of shoes every year, 80% ________ are sold abroad.
of which
which of
of them
of that
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||