Even though he ___to work for the firm ,he is asked to remai

Even though he is very old,he can work.改错 he asked he asked the farmers to work for a long time He always r__in the office to work for the firm 请问填什么? ___how to do the work,he asked the old scientist for help. he is too old to run ___to catch the bus he is working for a big firm? He( )wrote the letter to me,even though he was too busy. He is (confidence) ________ even though he has failed severa 1：He felt ___to work for the world peace.A.it his duty B.his He's seldom late for class,___he?_____,even though the weath every time he is asked to do some house work,he pretends ___ The boss praised the young man for his hard work,though he _