Is said whole, with nothing composed onto it and takes no だ/です, so there are no forms to conjugate.

お持もちする

omochisurulet me carry that (humble)expression

Example sentences2

荷物にもつはわたしがお持もちすることになっております。

nimotsu wa watashi ga omochi suru koto ni natte orimasu.

I'll be the one to carry your luggage. formal

お荷物にもつをお持もちすることもできますが、いかがですか。

o nimotsu o omochi suru koto mo dekimasu ga, ikaga desu ka.

I could also carry your luggage for you, if you'd like. formal