The image shows two sentences with a choice of prepositions or words to circle. The first sentence is "1. The ruler is in/on the pencil case". The second sentence is "2. The chair". The image is cropped and does not show the full second sentence or any pictures to accompany the grammar exercise. Therefore, only the first part of the first sentence can be addressed based on common usage.
For the first sentence, "The ruler is in/on the pencil case":
Without a visual representation, both 'in' and 'on' are grammatically correct depending on the spatial relationship. However, if the ruler is contained within the pencil case, 'in' is the more common and appropriate preposition. If it's resting on the outside surface, 'on' would be used.
For the second sentence, "2. The chair", the rest of the sentence and the picture are missing, making it impossible to provide an answer.
Answer: For the first sentence, the most likely answer is 'in'. The second part of the question is incomplete.