Sentence examples for behaviours is difficult to from inspiring English sources

The strength of the full impact of the HIV prevention services on HIV risk behaviours is difficult to gauge due to the nature of the cross-sectional study design, but in our analysis it appears to be substantial.

That is difficult to prove.

This is difficult to deny.

It is difficult to watch.

This is difficult to imagine.

Vigilance is difficult to sustain.

Growth is difficult to decipher.

It is difficult to accept".

It is difficult to say.

It is difficult to understand".

It is difficult to disagree.