–What’s that noise? --Oh, I forgot to tell you. The new machine __________.
After a knock at the door, the children heard his mother’s voice him.
Not until the train pulled into the next station ______ that his briefcase had gone.
John lost his job last year, but it wasn't long ______ he found a new position in another company.
In most cases, customers can't help ______ to buy things they actually do not need.
What do you think of his suggestion ______ we organize a football club?