11. With a smart watch, you will ________ your friends in other countries. A. speak B. say C. talk D. contact 12. ________ pencils and paper, every studentwill have a computer. A. Instead of B. By C. at D. Instead 13. “Do you think we should put a ________ bin in every classroom in order to keep it clean?”. A. recyclable B. recycling C. recycled D. reusable 14. “Why do you often forgetto ________ the lights when you go out of the classroom?” A. close B. turn off C. turn on D. shut down 15. We might have a ________ TV to watch TV programmes from space. A. automatic B. wireless C. local D. remote 16. I ...................any letter from him yet. A. haven’t received B. received C. will receiveD. don’t receive