In communication, a smile is usually _____ strong sign of a friendly and ____ open attitude. A. the;...
2023-02-04 11:55:35 133次 20102011江苏省高一下期末考试英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
In communication, a smile is
usually _____ strong sign of a friendly and ____ open attitude.
A. the; / B. a ;
an C. a ; / D. the; an
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