keep on one's toes
быть бдительным, внимательным
Mark tried to keep on his toes during a grammar test.
Другие идиомы:
- keep up appearances
- keep tabs on (someone or something)
- keep an eye on (someone or something)
- keep up
- keep books
- keep a straight face
- keep house
- keep (someone) up
- keep up with (someone or something)
- make one's toes curl
- keep one's cool
- keep an open mind about (something)
- keep one's head above water
- keep one's chin up
- keep harping on (something)