By now, you have perhaps read a little bit about the world of plants and animals, done some fun activities, learnt about how we measure, wondered about the stars that shine in the __________ sky, and so on.

The textbook states: “By now, you have perhaps read a little bit about the world of plants and animals, done some fun activities, learnt about how we measure, wondered about the stars that shine in the night sky, and so on.” — Examisthan.com