单项选择题
A. are freshmen permitted B. freshmen are permitted C. permitted are freshmen D. are permitted freshmen
A.About 20 minutes. B.About 30 minutes. C.Less than 20 minutes. D.At least more than 30 minutes.
A.She is going to the park. B.She is going to the exhibition. C.She is going to a concert. D.She is going to attend a meetin