33. She felt sorry that she had disturbed the ______ calmness of a man she respected.
He is a friend ______ can help you in time of need.
The most important thing ______ we should pay attention to is the first thing ______ I have said.
This is the only one of these books that ______worth reading.
The man ______ talked to you just now is my father.
They thought too much about ______.