The boy's the equal of the girl, __________ intelligence is concerned, but he doesn't work hard at all.
Ladies and gentlemen, please fasten your seat belts. The plane ______ in five minutes.
---The meeting has begun and __________ he will come. ---Of course, he is sure to come. He’ll speak at the meeting.
—What do you think of this matter? —This is a matter of__________ importance. I think.
Some countries are increasing their use of natural gas, and other forms of __________.
Though he is __________ worker, he works very hard.