--- I’m sorry I_______ my homework at home. ---That’s all right. Don’t forget _______ it to school this afternoon.
--How can we protect ourselves the earthquake? -- We should stay calm first.
—Smart phones are more and more popular now. —So they are. But they still ______ too much.
–That clothes store is _____ on weekends. --I see. I’ll go there next Monday then.
-- Which of the two T-shirts would you like? -- ________. I don't like their styles.
Do you know _an "o" and _ "u" in the word "computer"?