It is necessary for us to greet each other in our lives.
查看答案
Greetings are the same in different situations.
A. 对
B. 错
We can use "hello" to greet people in an informal situation.
A. 对
B. 错
In social situations, a woman would be introduced to a man first.
A. 对
B. 错
It is impolite to give your name without saying "hello: in an introduction.
A. 对
B. 错
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