问题描述：
When you want to introduce yourself to an american,you can just try a _____,such as "Hello,my name is ..."
A.commonly used greeting
B.used commonly greering
C.commonly using greeting
D.using commonly greeting
为什么选A呢?
A.commonly used greeting
B.used commonly greering
C.commonly using greeting
D.using commonly greeting
为什么选A呢?
问题解答：
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