They are /are not playing tennis now.(When are they playing tennis? What are they playing now?)
Where is Jane?-She is /is not reading a new book in her room.(What is she reading in her room?Where is she reading a new book?)
I am/am not writing a letter to my sister now.(When are you writing a letter to your sister?Whom are you writing a letter?)
They are /are not playing tennis now.(When are they playing tennis? What are they playing now?)
Where is Jane?-She is /is not reading a new book in her room.(What is she reading in her room?Where is she reading a new book?)
I am/am not writing a letter to my sister now.(When are you writing a letter to your sister?Whom are you writing a letter?)