Put the verbs in the correct form :
1)My naughty little sister is a good piantist.She (go) to the musical school.She (play) the guitar a little, too.  
2)Listen!What ...she (play)?-It"s my favourite song.  
3)John!What ...you (do)?-I (write) a letter to my english pen Friend.  
4)Why ...you (cry)?-I can"t do my Maths homework It"s very difficult.Will you help me? 

1)My naughty little sister is a good piantist.She goes to the musical school.She plays the guitar a little, too. 2)Listen!What is she playing ?-It"s my favourite song. 3)John!What are you doing ?-I am writing a letter to my english pen Friend. 4)Why are you crying ?-I can"t do my Maths homework It"s very difficult.Will you help me?