—I think everyone must do his best to _______pollution.—If so, there will be a good future for people of tomorrow.A. keep B. stop C. stand
It’s not __ good idea to drive for four hours without _ break.
— Do you know Lucy’s grandma? — Of course. She is a kind woman, but she has for about a month since shein the accident.
When people want to relax themselves, they preferTV or listen to music rather thannewspapers.
—If a="4," b="5," what’s the answer to the question “ a + 2ab +1 =?” —.
— I don’t know if Aunt Li these “stay-home children”tomorrow morning. — If I her, I would come earlier.