Question

I didn’t want to talk about that________ the phone.

A．in

B．on

C．at

D．by

Answer 1

B

介词辨析。In在里面；on在上面；at在一点；by通过某种方式。句意：我不想在电话上说那件事。On可以表示通过某种媒介，故选B。