---- Where _______ my books?---- Sorry, I don’t know.
—Have you seen book on the desk?—Is it English book? I saw it just now.
The woman asked the policeman ______. A. where the post office is B. where the post office was C. where was the post office
—You’d better not eat too much salt. It’s bad for your health. —________. A. Not at all B. Thanks for your advice C. It doesn’t matter
You will fall behind others _________ you work hard.A. if B. when C. unless
—Have you decided where to go for your summer vacation? —Not __________. We may go to Qingdao. A. ever B. already C. yet