---How long do you think it is ______he took up the job?--- Half a year at least.
Could I just ask one question about the plans for a new building _____ at the beginning?
---Did the policeman let you in?---No, I told him who I was.
I wonder if your sister will go to Mary’s birthday party.If she_______,so ______ I.
The police were seeking more information to find out _______the rich merchant.
Not until he called the secretary three times ______ that the manager went to an important meeting.