At the Olympic Games, only the athletes who have reached the agreed standard for their event will be______as competitors.
___, they set out to break the record for crossing channel swim.
So far nobody has claimed the money ___ in the library.
The workers ___ the glass and marked on each box“This Side Up”.
More and more high-rise buildings have been built in big cities ___ space.
Some insects ___ the colour of their surroundings to protect themselves.