_________easy to learn English well.
—Do you practice how to escape from dangers every term?—Of course. Our school pays much attention to the ______ of safety.
—Are these books yours, Mike?—No, they aren’t. They belong to ______.
—I think sixteen-year-olds should be allowed to drive.— ______. They aren’t serious enough at that age.
—Let’s visit the sick children in hospital and ______.—OK, let’s go.
—What are you listening to?—A song by Huo Zun. It ______ beautiful.