单选题
2.
Mr. Morgan can be very sad ______ though in public he is extremely cheerful.
A、
by himself
B、
in person
C、
in private
D、
as himself
【正确答案】
C
【答案解析】
[考点] 词义辨析
by himself：独自地；in person：亲自；in private：私下里；没有as oneself这一搭配。根据句意可知，选C。
摩根先生虽然在公众面前表现得很开心，但是私下里可能非常低落。
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