问题描述：
When someone asks you to his.
When someone asks you to his or her home,it is very clear who is the guest and who is the host,but invitations to restaurants for lunch,dinner,coffee,a drink,et,sometimes present problems,and the customs vary indifferent parts of the United States.
When someone asks you to his or her home,it is very clear who is the guest and who is the host,but invitations to restaurants for lunch,dinner,coffee,a drink,et,sometimes present problems,and the customs vary indifferent parts of the United States.
问题解答：
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