After a short rest,he () the work hard again.A.goes on doing B.went on doing C.went on to do

B
这题考的是go on to do和go on doing的区别
go on to do 接着做另外的事情,例如：
Go on to do the other exercise after you finish this one.
做完这个练习题后,接着做另一个练习题.
go on doing接着做同一件事情,例如：
After a short break,I go on doing my homework.
在短暂的休息后,我继续做作业.有两道题哎。还有你跟我一起挂掉了，我也写B，结果答案是C……呃。。。第二题没看到选D make sb./sth. +动词原形这是固定搭配第一题你们老师改错了吧？你问问你们老师……