In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can help the blinds, search for the bad eggs.
—_____ do you _____ the book?—It’s very interesting.
—How long can I keep the books?—_____
—_____ is it today?—It’s Tuesday.
—It’s time _____ lunch.—OK. Let’s _____.
Mr. Wang _____ gets up early. So he is ______ late for work.