He set an example ______ his classmates.
Soon after getting off his horse, the captain appeared at the second storey windows, _________ he could see nothing but trees.
Having tried hard several times, they finally _______ the hope of finding an effective way to save the dying man.
For a moment nothing happened. Then _________ all shouting together.
Children are ______ to meet with setbacks (挫折) as they grow up, so their parents don’t have to worry about it.
. You can’t see things clearly through a telescope unless it is ________ correctly to your sight.