Jack is late again. It is of him to keep others waiting.
A. normal
B. typical
C. mon
D. ordinary
网友回答
A. normal
(答案→)B. typical
C. mon
D. ordinary
解析：考查形容词：A. normal正常的B. typical典型的C. mon常见的D. ordinary普通的，只有B项可以用于It’s typical of sb to do sth.某人做…是常有的事情。句意：杰克又迟到了，他让别人等是常有的事情。选B。