It should be 'seems'. 'Three days' here is a single period of time. Rover
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Rover_KEIt should be 'seems'.'Three days' here is a single period of time.RoverHow is three days single? Isn't it 1,2,3 days? Shouldn't that be plural?
Grammar GeekThe key is that it is a single period of time.So is two weeks also a single period of time?