5. Remember to cover______sockets. They are dangerous for children to put anything into them. A. public B. electrical C. necessary D. similar 6. Lan: I’d like to invite you to come to my birthday party tomorrow, Mai. Mai: ___________________________________ A. Nice to meet you, Lan. C. Thank you so much. I’ll come. B. It’s time for me to go. D. Happy birthday to you. 7. Do this exercise by_________________. I can’t help you. A. itself B. myself C. yourself D. themselves 8. How long have you been here?-____________________ A. I have been here for 3 months. C. I have been here since 3 months. B. I was here for 3 months. D. I have been here 3 months ago. 9. After the first semester examination, Tim’s mother received____________from his teacher. A. wisdom B. a report card C. application form D. a poster 8 10. Bell experimented with ways of transmitting speech_____a long distance. A. on B. with C. over D. in 11. The____________is the land, water and air that people, animals and plants live in. A. environment B. program C. community D. organization 12. “I need a favor.” –“_________________” A. What can I do for you? C. How can I help you? B. I’m sorry. I’m really busy. D. All are correct