• CLOSE UP C2- QUIZ 1
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  • to experience something bad
    ​sustain something = suffer E.g to sustain damage/an injury/a defeat / The company sustained losses of millions of dollars.
  • (a) the best or most effective possible in a particular situation:
    We have found that our workers reach their optimal level of performance around 11 a.m.
  • (a) not usual or not socially acceptable
    The aim is to find the cause of the child's aberrant behaviour.
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