“Try your best to improve your Math, Nga.”, Miss Hoa said.  Miss Hoa told……................... 13. May I help you? - . A. Yes, that‟s ver y kind of y ou C. No, thanks I‟ full B. I‟m sorry . I‟m busy D. No probl em 14. The and store owners are concerned about the new mall. B. residents B. presidents C. presents D. selections 15. Nam and his bother have to cook dinner because his mother will go home late tonight. B. himself B. herself C. themselves D. ourselves 16. Alexander Graham Bell demonstrated his telephone invention to the public. B. succeed B. success C. successful D. successfully 17. Bao often spends his free time volunteer work at a local orphanage. B. playing B. doing C. watching D. looking 18. Nga likes listening to the before going to bed. B. folktales B. movies C. cartoons D. comic books