1. keep a straight face
I couldn’t keep a straight face whenever I looked at Sam even though I should have stayed serious because it was such an important meeting.
Being around such a jester as Marvin and keep a straight face is impossible. If he ever becomes a comedian he will be the best.
If someone tells jokes I coudn't keep a straight face
Inglese parola "utrzymać poważną twarz"(keep a straight face) si verifica in set:
01.2018 (5) part 2know the ropes