Complete the following sentence by filling in the blank with the correct verb form to complete the past perfect tense construction.
Answer:By the time the seminar ended yesterday, the guest speaker 【had answered】 all the questions raised by the participants.
Answer
had answered
The past perfect form 'had answered' correctly indicates an action completed prior to another past action marked by 'ended'.
Step-by-Step Solution
Key Concept
Past Perfect Tense Aspect in Sequence of Past Events
Estimated Time:45s