Martin: Can you cover for me on Sunday? I'm supposed to teach the high school class. Lisa: Sure. What's in? Martin: We're going to the beach for the weekend. Lisa: Well, don't worry. I'll take good care of Sunday school.()
错
解析:
对话中,Lisa同意帮Martin的忙,接下来Martin解释说要去海滩度周末。可见Lisa在前面可能问他去做何事。What'sup?在口语中常用来表示"你怎么了?""有什么事?",符合题意。