Danielis are talking his grandpa his new school the phone.A. to, on, inB. with, about,

Danielis are talking his grandpa his new school the phone.
A. to, on, in
B. with, about, m
C. to, about, on
D. with, on, to

A. to, on, inB. with, about, m(答案→)C. to, about, onD. with, on, to解析：考查短语： talk to/with sb about sth,和某人谈话关于某事，on the phone 通过电话，句意: Danielis通过电话正在和爷爷谈论他新学校的事。故选C。

就是这个解释