She has expressed her hope ______ the foreign students will spread the good will and sincerity of the Chinese people to other parts of the world.
If you really want yourself to be in good health, you must ___ always ___ so much.
One ought _____ for what one hasn’t done.
I didn’t see her in the meeting room this morning. She _____ at the meeting.
You _____ to the meeting this afternoon if you have something important to do.
Alexander Granham Bell invented ___ telephone in 1876.