. ----You just think of yourself! You kept me waiting for at least three hours．----I am sorry that you _____ think so. 

They demanded that the books________ to the school library at once. 

 "You know so much about literature. It's a pity you failed your degree," Harry said, "You ______ a good teacher."

. He wasted a lot of time playing football, otherwise he ________the exam.

---Imagination     important in science, and it helps us dream up our future.---You are definitely right. If only something         allow me to see insects and spiders magnified without getting close to them.