A. I have been interested in it.
B. I will be interested in it.
C. I was interested in it.
D. I am interested in it.
Given sentence is in simple present tense and it is in active voice.
Rule :
Subject + (is/am/are) + V3 + Other agents
A. I have been interested in it.
B. I will be interested in it.
C. I was interested in it.
D. I am interested in it.
Given sentence is in simple present tense and it is in active voice.
Rule :
Subject + (is/am/are) + V3 + Other agents