1.after a while ,she didn't cry any more.
同意句 After a while ,she (no) (more) cried.
no more,不再……
2.they could see nothing unusual,
同意句 .They（couldn't）see (anything) unusual.
nothing相当于not anything
3.It only (takes)him 20 mimutes (to drive) to his officer every day .
选择D takes ,to drive.
drive to+地点,开车到某地.to是介词,到的意思.