, I think, and the problem could be settled.

Only the factory ____ yesterday ____  this kind of machines.

 Not until then _____ their marriage was breaking up because they had little in common.

If you don’t go there, ______．

---Can I use the telephone on the table, sir? ---Under no circumstances          to use the telephone in the office for personal affairs.

--- He has never learned French． ---- __________．

Have you got a free evening next week ? ________, let’s have dinner.

If ____, the dirty air will lead you to fall ill.

Not until she took off her dark glasses ________ she was a famous film star.

Hardly _______________ when we were told to stop.

Not until all the fish died in the river ______ how serious the pollution was.

Although there seemed some signs of recovering, experts said that few, _____, could come back to normal after getting this disease.

Among the reporters        first work about college students’ life sells pretty well. He’s busy talking with them.

Only when the war was over         return home.

Not until the next morning _____ how serious the situation was．

If       carefully, the experiment will be successful.

_________ did the students realize that they were mistaken about spiders. 

Don’t be too rude to your father. Never in his life _____ in that way.

So ________ student ________ that he can work out all difficult problems.

__________ can you expect success.