参考答案

正确答案：B
解析：W：Do you know what's wrong with Peter? He has been acting very strangely lately.
M：Come on，with his parents coming to visit next week-right after he's moved into a new apartment-he's just got a lot on his mind.
Q：What does the man say about Peter?
四个选项的主语都是He，动词都是is，可以推测本题考查说话人He目前的状态。
女士问男士知道皮特最近出了什么问题吗，他最近一直表现得很奇怪。男士用Come on来劝慰女士不用担心，也表明他了解情形，皮特的父母下周来，在他刚搬新家之后，he's just got a lot on his mind(皮特最近有许多事情要操心)，B)He's thinking about a number of things与he's just got a lot on his mind是同义表达，所以答案是B)。