Dear Yong Peng,

> thanks for all the explanation, sentences with missing parts
> are tricky, and are not easy for beginners.

Yes, it's a bit of a drawback that Rev. Narada didn't select
passages that make sense by themselves.

> Bhante, do you happen to know what type of compounds are
> di.t.thapubba and satthudhammo? Ven. Pandita says they are
> Tappurisa. What do you think?

In the context of Exercise 20-A I agree with the venerable.

Satthudhammo could be either a tatiyaa-tappurisa (satthaaraa
desito dhammo) or if referring to a quality (gu.na) of the
teacher, then it could be a cha.t.thii-tappurisa (satthuno
dhammo).

Best wishes,

Dhammaanando