Unit 9 Wheels(6)Unit 3 Clean Machines Grammar1.– Are you a visitor here?-- That’s right. I ____ round the world and now my dream of coming to China ___ true.A. have traveled; has come B. was traveling; has goneC. am traveling; has come D. have traveled; has been come2. Jim and I ____ friends for three years. We first got to know each other at a Christmas party. But we ___ each other several times before that.A. had been; have met B. have been; have met C. had been; had met D. have been; had met3. The policemen ____ for the missing child for whole day and ____ him yet.A. have looked; didn’t find B. have been looking; haven’t foundC. looked; haven’t found D. have looked; haven’t found4. I _____ grammar for ten years, but I still can’t speak English.A. had studied B. studied C. an studying D. have been studying5. The oil price ____ in the past two months and I don’t know if it will continue.A. has been risen B. has been rising C. had been rising D. had risen6. – Why are you still in the classroom now?-- We _____ the classroom all the morning.A. are cleaning B. have cleaned C. will clean D. have been cleaning7. It seems the oil ____ from the pipe for a while. We’d better take the machine apart to put it right.A. had leaked B. is leaking C. has been leaking D. leaked8. She _____ for ten years; she looks young, though.A. married B. was married C. has married D. has been married9. -- _____ Betty this morning?-- Not yet. But shi is sure to be here before noon.A. Have you seen B Will you see C. Do you see D. Did you see10. I ____ so busily recently that I ____ no time to help you with your math. A. have been working; have B. have worked; had C. am w...
