How did your uncle learn to play the guitar一By ____.

doing market research, all the researchers think it ________ to spend a large sum of money on the project.

media can’t learn to respect and appreciate others’ cultures, there will exist _____ misunderstanding and harmony can’t be achieved.

What the expert has said and donewill be _______ to the department managers.

Each of the singers _______ a ________swimming pool.