在忙什么

what are you busy doing

→ 在
phrase Rare #21,924
what are you busy doing Used to ask what someone is currently occupied with or working on. Depending on context, it can also mean “what are you up to?”
CH: 你这几天在忙什么?
EN: What have you been busy with these past few days?

在忙什么

What are you busy with?

— 调音师 (2018)

给你看看在忙什么

Let me show you what I’m busy with.

— 乔乔的异想世界 (2019)

老马特到底在忙什么

Yeah, what on earth is old Matt busy with?

— 死亡诗社 (1989)

没错你以为我在忙什么

Exactly. What did you think I was busy doing?

— 上帝之城 (2002)

在忙什么?

What are you busy with?

— 大象 (2003)

你最近在忙什么

What have you been busy with lately?

— 八部半 (1963)