____to caring for an Ebola(埃博拉) patient, the nurse found herself also infected, feeling hopeless.

Lily, ______do you study for a math test—By asking my teacher for help.

Mother wanted to be a good provider, a role she ______ since her marriage to Father

The house could fall down soon if no one ______ some quick repair work

You look sad. What has happened — Everyone ______ us to win the match, but we lost.