Sentence examples for it has been impossible from inspiring English sources

It has been impossible, therefore, for the Tirana Government to keep its army up-to-date on military theory".

But it has been impossible.

It has been impossible to grow food for my family.

But, so far, it has been impossible to engineer multiple modules into a single unit.

However, it has been impossible to establish long-range evolutionary relationships as sequence homology diminishes.

But officials say that it has been impossible to reach a consensus on that issue.

It has been impossible to get to the bottom of which one is true.

Given the nature of the conflict it has been impossible to independently verify these claims.

For more complex organisms with millions or billions of cells, it has been impossible to construct large-scale lineage trees.

"For the past 10 years it has been impossible to travel south with a sleigh.

It has been impossible to do it outstandingly all at once".