thanks very much.Do u know where I can get example of picture comprehsion
Deepika - any picture will do: something from the internet or your family photograph album will do it. It is not important what it depicts; the point is that your DC will need to gain familiarity with this style of question, learn to create a scene or a story in a limited amount of time and write in a way which is engaging and fluent.
But don't assume this is the only type of essay question that will come up - practise a range of things. You won't get a 'picture comprehension' as your question suggests - this will be for the writing section. The comprehension will be about a written passage or a novel extract if this is part of your school's exam.