With regard to', etc

A number of prepositions can be used when

we wish to make formal references or focus

attention e g as far as is concerned, as for,

as regards, as to regarding, with reference to

with regard to

As regards your recent application for a

job, we haven't made up our minds yet

We haven't had a reply from our neighbours

regarding their proposal to build a garage

I am writing to you with reference to your

inquiry of November 27th

However, informal uses can occur

/ didn't ask too many questions as to his