there is no question for writing skill ?
The topics with its detailed explanation along with samples are available in your study material. Please follow the link given below:
https://www.meritnation.com/cbse/class7/studymaterial/english/writing-section/1_7_7_831
https://www.meritnation.com/cbse/class7/studymaterial/english/writing-section/1_7_7_831