laughing uncontrollably
смеяться без удержу (smeyatsya bez uderzhu)
"His joke had everyone in stitches."
"Его шутка рассмешила всех до слёз." (yevo shutka rassmeshila vsekh do slez)
a young or innocent kind of love
exactly at the right moment
to make a very serious promise that something is true
to admit that you have done something wrong
to raise something suddenly and sharply
a person who looks very healthy