keep up an act
устраивать спектакль, претворяться
"Don't try to keep up an act; I know what you are capable of."
Другие идиомы:
- keep one's hands off (someone or something)
- keep (something) under wraps
- keep one's ear to the ground
- keep one's hand in (something)
- keep down (something)
- keep track of (something)
- keep (something) under one's hat
- keep tabs on (someone or something)
- keep harping on (something)
- keep time
- keep (something) down
- keep one's cool
- keep house
- keep the home fires burning
- keep one's finger's crossed