Often there's no clear evidence one way or the other and you just have to base your judgment on ____.
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We love having our grandchildren visit, but they always leave such a ____ for us to clean up afterwards.
So far as I know what people's tastes haven't changed much, and, ____, they are getting more diverse these days than they used to be.
September 1939 saw the ____ of the Second World War.
His mother died in the accident, too. But we didn't tell him the news as we were afraid that would ____ his confidence in full recovery.