Помогите пожалуйста.
Open the brackets using Present Perfect Continuous
1 James is in his room, he (to play) there since the morning.
2 For 3 hours now we (to chat) about it and we haven't come to any decision yet.
3 Jane, do you know where my hat is? I ( to look) for it for half an hour and I can't find it.
4 Your cousin (to dance) with that red-haired girl since she came into the room.​