Next now I'll fly to London.I stay with my pen friend.They'll meets me at the airport.My pen friend is introducing me to his family.найти нужно ошибку в предложениях

Next (!)week Ill fly to London.(!)Ill meet with (!)my pen friend.Theyll meet(!) me at the airport.My pen friend will introduce(!) me to his family. (!)I phone my mum and (!)will say (!)that I am OK.My host family will show(!) me my room.