I'm studying in America but I'm having a hard time using proper expressions in proper situations..So I'm really nervous when I speak English..
When I order 2 meals and want to tell a staff that I want to put sauce in one and don't want to put sauce in the other, how can I say this shortly?
When I pay after having lunch and want to pay separately, is it okay to say 'We're gonna pay separately.' ?
Do I have to say 'you're welcome' to every single 'thank you'? Cause I find many Americans say thank you even though I don't really do something helpful for them. For example, teachers say thank you when I hand in my assignment which is so weird for me to hear thank you about it and I don't know what to say after hearing that.