--You're in a hurry. Where are you going? --To the cinema. Sue ______ for me outside.
The air pollution is serious, ________ we must try our best to reduce it. A. so B. or C. if
--The river used to be clean. How does it become dirty? -- There are many factories ________ waste water into it. A. pouring B. pour C. poured
-- ________ Why don’t you clean your room?-- Sorry, I’ll do it right away.A. Take it easy.B. What a mess!C. Don’t worry.
Turn down your radio. Too much noise does great harm________ your ears. A. for B. on C. to
-- When did you buy the car? -- I ________ it for nearly two years. A. have had B. have bought C. bought