With each year, the secret must have become more difficult for his mother to bring to light.

"Moving north and south within the village has become very difficult."

These, as time went on, were becoming more difficult to do.

What activities have become more difficult, and which ones are the most important to you?

But he added that doing business had become more difficult.

But in the last two years, Iran has again become more difficult to deal with.

The game has become much more difficult for big fund groups.

It was becoming more difficult to get up and go to work each day.

For many of the poor, access to care has become more difficult.

But that had already become difficult, even before the city closed him down.