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,...
You won’t lose weight______you keep a diet and take exercises every day.
-- Excuse me, where can I exchange _________? --There’s a bank on the second floor.
-- Is this your notebook? -- No, it isn’t. Ask Bill. He is looking for ___________.
--Why are you laughing? --Oh, I’ve just read interesting story.
—Can you tell me how to use a micro blog on my phone? —_________. But I have to finish my work first.