Using traditional Chinese medical records, Youyou Tu rediscovered an ancient plant-based treatment for malaria that worked ________ modern therapies failed.
She had no idea how it _____ that her husband met with trouble again.
As far as I’m concerned, education is about learning and the more you learn, ______.
The Olympic Games are being _____ live to many countries.
The child tiptoed quietly to the bird, _____ into the forest when he was about to catch it.
Mr. Green has two sons, one of _____ working as a bus driver now.