风管
参考答案:
采用金属、非金属薄板或其他材料制作而成,用于空气流通的管道。
What ______ him yesterday?
A.happened
B.happened to
C.was happen
D.happened with
There is _____ university in our city. _____ university is far from our school. [ ]
A. an; A
B. a; The
C. an; The
D. a; 不填