下列句子中，没有语病的一项是（ ）

This method must be effective ,for I’ve seen it ____ jobs by many different people.

ned out that his pulsebeats ____ , which made us relieved.

I will appreciate it ______ you can change your plan a little bit to make it more workable.

Young people who have got jobs may realize university lessons can’t be the only preparation for all of the situations ________ appear in the working world