The teacher asked us to read the text________ second time to find________ topic of the text.
Young students are______ not to smoke both in and out of school.
--- Beautiful day, isn’t it? Shall we go out for a picnic?--- ______________!
It’s _____ you do today that will make a difference in your life tomorrow.
Mr. Green showed his students some photos ________ at World Expo 2010 Shanghai.
A group of children are looking into the box, ____ about what can be inside.