Though computers can do a lot of work man can’t do, they can’t completely _______ human beings.
The play had already been on for quite some time when we __ at the New Theatre.
Not until he left his home ______ to know how important the family was for him. A had he begun B did he begin C he began D he had begun
There is no point _________with him.
---Have you ________? ---No. I had the wrong number.
________ I can see, there is only one way to solve this problem.