A. had been
B. has been
C. was being
D. is being
Correct Answer:
Option A – had been
Explanation
the trader ”complained” is a (past tense) and (past participle). this means that, the event had already taken place in the past.
the word ”robbed” is in its past tense as well.
had is also a (past tense) and a (past participle) mostly used to narrate an event or experience undergone in the past. it rightly completes the space on the question.