当我看到招聘广告时，已经太晚申请了。

By the time I saw the job advertised it was already too late to ___apply.

我已经在那里申请了一份工作。

I've ___applied for a job there.

我申请了这门课程，并上了第一节课。

I ___applied for this course and went to my first lesson last week.