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must stay up late must have stayed up late was staying up late has stayed up late
he found he had found did he find was he found
However Because Therefore Though
if he got up earlier unless he had got up earlier but he had gotten up so late but he got up rather late
failed ignored caught missed
might miss may have missed should miss must have missed
why does he stay up so late why he stays up so late what is he doing what he is doing
Lucky Luckily Unluckily Luck
why; because why ; that which; because which; that
might miss must miss may have missed must have misseD.
he did speak he spoke did he speak did he spoke
Because;for Because of;because For;because of Because of;because of
why does he stay up so late why he stays up so late what is he doing what he is doing
In a way In fact In a word As a result
could miss may have missed can have missed might miss
why, that why, because that, why because, why