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 (someone) up
- keep a secret
- keep abreast (of something)
- keep track of (something)
- keep (something) under one's hat
- keep at (something)
- keep (someone) from (doing something)
- keep off (something)
- keep still
- keep an open mind about (something)
- keep a straight face
- keep the ball rolling
- keep up with the times
- keep company (with someone)
- keep (someone) in stitches