His parents both died a few years ago and he became an orphan, so a kind person ______ him ______.

New ways have been found to prevent the river ______.

Once new difficulties _____ in our new job, we should learn to use our brain to deal with it.

Each girl present at the party was wearing a flower in the hair, which _______ their beauty.

In the cross-lake swimming race, a boat will be ____in case of an emergency.