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 late hours
- keep on an even keel
- keep one's nose to the grindstone
- keep up with the news
- keep on (doing something)
- keep pace (with someone or something)
- keep cool
- keep track of (someone or something)
- keep one's wits about one
- keep one's word
- keep (someone) up
- keep a stiff upper lip
- keep (someone) out of one's hair
- keep the lid on (something)
- keep house