问题补充:
Jack is late again.It is of him to keep others waiting.
A. normal
B. typical
C. common
D. ordinary
答案:
A. normal
(答案→)B. typical
C. common
D. ordinary
解析:考查A.normal正常的,B.t ypical典型的mon普通的,D.ordinary普通的,句型: Its typical of sb to do,某人做…是常有的事,句意:杰克有迟到了,让别人等是他常作的事。选B。