keep on one's toes
быть бдительным, внимательным
Mark tried to keep on his toes during a grammar test.
Другие идиомы:
- keep a straight face
- keep books
- keep from (doing something)
- keep house
- keep one's eye on the ball
- keep cool
- keep late hours
- keep a close watch on (someone or something)
- keep up
- keep one's eyes open
- on one's toes
- keep a civil tongue
- keep abreast (of something)
- keep pace (with someone or something)
- keep the ball rolling