单项选择题
A.fighting against global warming B.fighting against terrorism C.preventing money laundering D.political force reduction
A. He was wondering if the speaker was used to living in America. B. He was trying to show friendliness to the speaker. C. He wanted to keep their conversation going. D. He believed the speaker was a foreigner.
A. has just started. B. will start in a minute. C. won’t last long. D. has been on for hours.