What is the verb of the word-Play?

Five fledgling sea eagles left their nests western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.

In order to to avoid earthquake hazards , civil engineers had better ____ soil before making high -rise buildings.

He is called a genius. Here the verb is-

Choose the word or phrase that completes the sentence best.
He spent a long time looking for a tie which ____ his new shirt.