Sentence examples for it is often exceptionally difficult from inspiring English sources

It is often exceptionally difficult to diagnose an infectious-disease syndrome and make an accurate bacteriological diagnosis.

This fast-track to notoriety may be short-lived but it is often exceptionally lucrative.

It is often difficult to say.

It is often difficult to discern whether Blatter is serious.

First, it is often difficult to set appropriate support threshold.

It is often difficult to diagnose and treat.

However, it is often difficult to control the etching process.

That sounds straightforward, but it is often difficult or impossible.

Thus, it is often difficult to obtain evidential data.

It is often difficult to find straightforward solutions.

It is often difficult to identify all analyses.