Переведите в косвенную речь "Nick asked Mary: "Why are you laughing?"

Nick asked Mary why she was laughing. 

Nick asked Mary why is she laughing
The girl said that she shall met her parents at the station
John asked Ann if she fond of going to the theatre
Toms mother said that he shouldn't eat too much ice cream
My granny asked who will read the next story
Nick said that he is going to work in the garden