Fill in with past perfect tense: I _______ my homework when my uncle arrived.
A. completed
B. had completed
C. was completing
D. had been completing
Answer:B
Fill in with past perfect tense: I _______ my homework when my uncle arrived.
A. completed B. had completed C. was completing D. had been completing
Explanation: The past perfect tense describes an action completed before a certain moment in the past. For example, I had completed homework when my uncle arrived.