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单选题
As it turned out to be a small house party, we _______ so formally.
A
need not have dressed
B
must not have dressed
C
need not dress
D
must not dress
参考答案
参考解析
解析：
结果是那只是一个小型的家庭聚会而已，我们本可以不打扮得如此正式的。need not不必(做某事)。must not禁止，不准(做某事)。此句表示已经发生的事情，因此用完成时，隐含一种后悔的心情。
结果是那只是一个小型的家庭聚会而已，我们本可以不打扮得如此正式的。need not不必(做某事)。must not禁止，不准(做某事)。此句表示已经发生的事情，因此用完成时，隐含一种后悔的心情。
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