Question

This morning I called a travel agent------the telephone numb

Answer 1

答案是 C of which

This morning是状语

I是主语

called是谓语

a travel agent是宾语 后面是定语从句

其中 of which 是带介词的关系代词 引导定语从句 并作从句中的定语

相当于介词短语作定语

the telephone number 是定从中的宾语

I是定从中的主语 got 是定从中的谓语

from one of my good friends .是定从中的状语

of which the telephone number

=whose telephone number

=telephone number of which