第10题: [单项选择]Man: These family reunions are complicated. Could you pick Mark up from the airport I'm on a tight schedule today.Woman: OK, but then let's switch. I'm supposed to pick Sarah up tomorrow.Question: What does the woman mean 参考答案:C 答案解析:[解析] switch意思是“调换”,女士原本应该(be supposed to)是明天去机场。意即调换之后,她今天去而明天不用去。故选C项。