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Ex 2 1.He has already arrived and we can meet together.
2.She has never eaten sea food.
3.We Haven't decided this question yet.
4.I have never spoken about her.
5.Lucy has never stayed at a 5 star hotel.
6.My friend has just moved to High Street.
7.He has just forgotten to invite his friend .
8. they haven't heard about this band yet.
ex 3. 1.They didn't arrive at the airport
2.Fred didn't forgot to phone his friend
3Julia didn't sent an e-mail ti her friend
4.She did't clean the kitchen yet
5.We did't turn the radio off before going out
6.Tom did't repair his bike yet
7.Her aunt didn't forgot to sent a telegram
8They didn't watch the TV for a few weeks