单项选择题
Questions 11 to 18 are based on the conversation you have just heard.
A. For a few days. B. For several weeks. C. Since last year. D. For a few hours.
A. A pet dog. B. The son of the couple. C. A pet cat. D. The man’s younger brother.
A. American English. B. British English. C. Business English. D. Non-English languages.