Verbs

Select the correct choice in the pair.

Select the correct choice in the pair.

In the Pacific lies an island called Guam. As an animal specialist, Dr. Delia Chiesa visits the island regularly. He ______ us a strange story yesterday about this island.

In the Pacific lies an island called Guam. As an animal specialist, Dr. Delia Chiesa visits the island regularly. He told us a strange story yesterday about this island.

What is the context clue to determine the verb tense in this sentence?

After much study, Julie Savidge, a biologist reached some conclusions. She ruled out disease and loss of habitat as the culprits. Then she discovered a relationship between the disappearance of birds and the increase of brown tree snakes. Dr. Savidge _____ the brown tree snake was responsible for the birds' disappearance.

Which verb or verb phrase could go in the blank?