Formal:
* વ્યસ્ત છો (vyast chho): This is the most common and direct way to say "are busy".
* કામમાં વ્યસ્ત છો (kaammaa vyast chho): This means "you are busy with work".
Informal:
* વાંકે છો (vaanke chho): This is a more casual and informal way to say "are busy" and literally means "you are occupied".
* હાલમાં કામ છે (haalmaa kaam chhe): This means "there is work right now".
To ask someone if they are busy:
* તમે વ્યસ્ત છો? (tame vyast chho?)
* તમારી પાસે સમય છે? (taamaree paase samay chhe?) This means "do you have time?".
Remember that the appropriate way to say "are busy" will depend on the context and who you are talking to.