cool is related to physical appearance to look cool and calm is related to mind state.

hello sir i don't know how to speak english? and first you practice to write spelling, learn spelling then try to make short sentences and then further you go.

practice that sentence before you go for conversation.

for is not necessary but here for to ask the cost in a way.

both sentence are correct.

before you come and after you go.

human being

both any and many use for countable things so use one of them . any or many

say- bolo...tell- bato....can - sakta ya skti hu...

you don't have trust on me.