Find out

it means : discover, catch on to, detect, unearth

to CALM (SOMEBODY) DOWN

CALM DOWN - to stop feeling upset, angry or excited, or to stop someone feeling this way
"She sat down and took a few deep breaths to calm herself down."

to DROP SOMEBODY A LINE

DROP A LINE - to write someone a letter, especially a short informal one
"Just drop me a line when you've decided on a date."

to FALL APART

FALL APART

a) to break into pieces
"My shoes are falling apart."

b) stop working
"Our marriage fell apart!"

to PUT OFF + gerundium

PUT OFF - odkládat něco na později
"I have to put off learning because I am very busy now."
"The surgical interference must be put off."

to CARRY ON

CARRY ON = GO ON