làm đúng, giải thích đầy đủ 1. Is the rubbish every day? A. collect B. collecting C. collected D. be collected 2. In 1876, the telephone first introduced by Bell and Watson. A. was B. is C. has been D. had been 3. It’s important wildlife in the area. A. to conserve B. conserving C. conservation D. conserve 4. We were delighted your letter yesterday. A. to get B. got C. getting D. get 5. Let’s play tennis instead of television. A. watch B. watching C. watches D. to watch 6. Email, and chat rooms let children with friends and family members. A.talk B.say C.speak D.communicate 7. Luckily, there are many communication techniques to help overcome . A.foreign languages B.culture shocks C.language barriers D.sound barriers 8. I with my aunt when I go to Ha Noi next summer. A.stay B.staying C.stayed D.will be staying 9. Do you spend a lot of time to music? A.listen B.to listen C.listening D.to be listening 10. How many times have I told you football in the street? A.not to play B.do not play C.not playing D.will not play