A: I'm tired.
B: What happened?
A: I was with Jim all day. He just drove me crazy.
B: It must have been tough, I can imagine.

A: 我好累哟。
B: 怎么回事？
A: 我整天跟吉姆在一起。他快把我气疯了。
B: 那必定很难受，可想而知。

重点解说：

★ drive [make] (someone) crazy 「让(某人)十分生气」

★ "must have + 过去分词"用于推断某事的准确性，如She must have overheard our conversation.「他一定碰巧听到我们的谈话了。」