_____ the heavy snow, I can’t go to school today.
—I can hardly believe my eyes. Is that you, Lucy?—Yes. It has been almost 20 years ______ we were together.
—It’s smoggy these days. That’s terrible!—Yes, I hope to plant trees. ______ trees, ______air pollution.
—Do you like seeing a movie on your mobile phone?— No. I ______do that because it makes me uncomfortable.
If you want t get more information about English learning, please visit our _______.www.yyxx.cm
—Do you believe that paper is made _____ wood?.—Yes, I do. And you can see that books are made____ paper.