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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In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.()
A. |
the; / |
B. |
a; an |
C. |
a; / |
D. |
the; an |