钥匙都在书房吗英语怎么说

"Are all the keys in the study?" is the English translation for "钥匙都在书房吗?" in Chinese. This sentence is asking if all the keys are located in the study.
Here are a few more examples of how this sentence can be used in different contexts:
"I can't find my keys. Are they in the study?"
"I thought I left my keys in the study. Did you move them?"
"Can you please check if the spare keys are in the study?"
In each of these examples, the speaker is asking about the location of keys and specifically if they are in the study.