Staying in a hotel costs（ ）renting a room in a dormitory for a week.
I haven't been to a pop festival before and Mike hasn't（ ）.
It is （ ）that text messaging while driving is dangerous.
They took （ ） measures to prevent poisonous gases from escaping.
Her face is （ ） to me, but I can't remember where I saw her.
Please do me a favor —（ ） my friend Mr. Smith to Youth Theater at 7:30 tonight.
Doing morning exercises and eye exercises are （ ） to your health.
I missed a （ ） opportunity to be promoted to a higher position.
The teacher's （ ） explanation left the students no confusion over that abstract theory.
Lucy tried to help, but she was （ ）——as if she was interfering, not helping.
After my mother took some pills, the blood returned to （ ）.
He was found（ ）one month after he was born.
This album is （ ） as it was the only one ever signed by the President.
Go back to your room and leave me（ ）.
Mr. Verder never thought that he would become a member of the board of directors because of his （ ） origin.
“Society” is a(n) （ ） term; it may mean much or nothing.
Once you are （ ） the trick used in advertisements, you, I think, won't spend money at your own will.
In this article, you need to back up general statements with （ ） examples.
I think it （ ） that she should be knowledgeable about music for her present job.