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 eyes open
- keep one's hand in (something)
- keep (someone) in line
- keep the lid on (something)
- keep one's cool
- keep time
- keep (someone or something) in mind
- keep (someone) from (doing something)
- keep one's nose clean
- keep a straight face
- keep an eye on (someone or something)
- keep company (with someone)
- keep still
- keep on an even keel
- keep on one's toes