after a short rest,the scientist goes on 【】 his work

问题描述:

after a short rest,the scientist goes on 【】 his work
a.doB.to doingC.doing D.does

go on doing表示:继续做之前的事情.
go on to do表示:昨晚一件事情后停下来,然后再做其他不同的事情.
本题的选项,只有符合语法,因此答案为C.