His father told me that he __________ for the United States three days __________.
There are a great number of natural resources in the desert, which remain to be ________.
Everything ________ into consideration, they thought the car was good enough though it was heavy on oil.
The man is ________ a serious nervous breakdown because he is unable to deal with pressure from daily life.
Jim is fond of his present job. He must get a real ________ out of his work.
—I really don't know what I ________yesterday without the bike you lent me.—Glad to have been some help to you.