Every possible means ______ to prevent the air pollution, but the sky is still not clear.
---Sorry, I can't watch TV about Olympics with you.I have to prepare well enough for the exam. ---____! We can watch TV about Olympics together tomorrow.
Shortly after the book ___, the war between Iraq and America ____.
—The twins will fly to New York with their parents this evening? ---No.In fact, their plane ___ from Shnaghai ahead of time.
Bush spent I think a lot ___ time in voting than Kerry did.
---Have you had lunch? ----_____.