Those who are not _______ with the progress they have made will work harder.
Scientists study ____ human brains work to make computers.
______ in the school campus in spring, we will always noitce a colorful display of flowers.
It’s great that all the visitors who _______ on the island were saved.
The operation is _______ success. and the patient is now out of ______ danger.
At the routine office meeting, the headmaster insisted that the problems _______ paid special attention to.