单项选择题

在本节中，你将听到15个对话，每段对话后有一个问题。请从A、B、C三个选项中选出答案，并标在试卷的相应位置。每段对话后有15秒钟的停顿，以便回答问题和阅读下一问题及其选项。每段对话读两遍。
下面请听这些对话。
[听力原文] F: I heard from Bob yesterday. He told me he went to Beijing with his family last week.
M: I think he must have had a good time.

Where was Bob last week（）