.Only _____ as an interpreter _____ how important it was to practise speaking English.

If you really have to leave during the meeting,you’d better leave ____ the back door[ ]

How is the programme—- The answer is _____

_______the police thought he was the most likely one,since they had no exact proof about it,theycould not arrest him.[ ]

t the painting over there As weknow, an oil painting looks better _______