Mr. Green told us _____ turn the lights off when we leave the classroom.
After school we usually play _________ soccer for half _________ hour on _______ sports ground.
---_____ is your mother? ---She is 39.
可表示“中国共产党”的英文缩略词是_____.
-- Hi, Mike. Can you help me? -- OK. ________.
-- What can I do for you, madam? -- I'd like two ______.