听下面一段较长对话，回答以下小题。
【小题1】Why didn’t the woman open the present when she received it?

A．She didn’t like it.

B．She thought that it would be impolite.

C．Her host family told her not to do that.

【小题2】What do we know about the woman?

A．She is a little shy.

B．She has been in America for years.

C．She knows very little about American customs.

【小题3】What does the man tell the woman to do?

A．Send her host family a thank-you letter.

B．Send her host family a present.

C．Give back the present to her host family.