"This task is proving more difficult than it first appeared."

The next task proved more difficult: getting access to the company's computers.

The task proved hard indeed, yet in the end it was done.

This task would later prove too great for both men.

The next task would prove to be the most challenging: the price book.

She could not bear to think that this simple task might prove beyond her strength.

However, the task of getting all relevant authorities to agree on a plan has so far proved difficult.

That task proved much less difficult than it should have been.

This task proved far more difficult than it needed to be.

But the task has proved difficult because more than 100,000 such complaints are filed each year, the report said.