. He was so foolish _______ his car unlocked.
We should always keep in mind that ______ decisions often lead to bitter regrets.
The scientist has made quite a few discoveries, ______ of great importance to the whole world.
What was the critic's ______ to the novel?
She will have to find somewhere else to work, for she can't ______ this loud noise any longer.
This house will probably come on the ______ next month.