No agreement was reached in the discussionas neither side would give way to

How long do you think it is _____ he took up the job?— Half a year at least[ ]

I hadreached a point in my career _____ I needed to decide which way to go．

Who do you think is the right person to ________ the task?

Why haven’t you asked her to come here?—She _______ an important experiment when I found her and she _____ it