问题补充：
During the holiday, people went to travel.
A. million of
B. two millions
C. millions of
D. million
答案：
A. million of
B. two millions
(答案→)C. millions of
D. million
解析：句意：假日期间，数百万的人出去旅行。millions of数百万的，表示不确定所指时，需要加s,加of.故选C
时间：2021-09-20 04:51:40
During the holiday, people went to travel.
A. million of
B. two millions
C. millions of
D. million
A. million of
B. two millions
(答案→)C. millions of
D. million
解析：句意：假日期间，数百万的人出去旅行。millions of数百万的，表示不确定所指时，需要加s,加of.故选C
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