New technologies have made possible to turn out new products faster and at a lower cost.
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.
I_______ have watched that movie —it’ll give me horrible dreams.