Ai giúp vote 5 sao và ctlhn! 12. Nam: “Do you have Mai’s telephone number?” Lan: “I am afraid I don’t know. Why don’t you find out from the telephone ______?” A. register B. directory C. list D. number 13. Bao: Can I help you? – Hoa: No. I can do it ______ A. yourself B. itself C. ourselves D. myself 14. You can buy sugar and salt at a ______ A. grocery store B. neighborhood C. drugstore D. gas station 15. The air in the countryside is often______ A. beautiful B. peaceful C. clean D. polluted