怎么会【zěnme huì】

怎么会 questions whether something is even possible. The speaker is surprised and finds it hard to believe. 呢 at the end is common.

It works for what has already happened as well as for what someone says will happen.

怎么会呢 as a reply

On its own, 怎么会呢 or 怎么会 answers a worry or a suggestion with "of course not".

怎么会 or 怎么

怎么 by itself asks how something is done, or why. 怎么会 asks how it could be the case. A learner asking how to get somewhere with 怎么会 ends up sounding astonished that the trip is possible at all.

• × 你怎么会去机场？ (asking the route) → 你怎么去机场？

怎么能 is a different reproach: "how can you", about whether something is acceptable.