问题
选择题
We already have ______ pencils, but we need two ______ pens.
A．dozen of, dozen
B．dozens of, dozens
C．dozens of, dozen
D．dozens of, dozen of
答案
答案：C
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We already have ______ pencils, but we need two ______ pens.
A．dozen of, dozen
B．dozens of, dozens
C．dozens of, dozen
D．dozens of, dozen of
答案：C
