问题补充:
-Im sorry Im late again But I….
-Its o use. Its the third time that You came late this week
A. complain
B. complained
C. to complain
D. complaining
答案:
A. complain
B. complained
C. to complain
(答案→)D. complaining
解析:句意:上文,很抱歉我又迟到了,但是我……。下文,抱怨是没用的。这星期,你已经是第三次迟到了。Its o use doing sth ,这是固定句型,意思是做某事是没用的,选D。