Transposer la phrase suivante à la forme négative.
I've been working all day.
They've been talking for a long time.
Transposer la phrase suivante à la forme affirmative.
We haven't been waiting for you.
The children have been playing outside all afternoon.
The dog hasn't been growling for an hour.
I haven't been trying to teach them some Chinese.
We've been walking in the forest.
Clara and Brendan have been fighting all week.
I haven't been sleeping too long.
He has been telling me silly jokes.
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