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The poor little boy________by his heartless parents was seen begging in the street.

Throughout history，the language________by a powerful group spreads across a civilization.

Nobody but doctors or nurses and those __________ by Dr. Hu ________ to enter the patient's room.

Tsinghua University, ________in 1911, is home to a great number of outstanding figures.

Usually I don't allow________in my office，but yesterday I allowed him________ here.

The disco music，digitally________in the studio，sounded fantastic at the party that night.

Lydia doesn't feel like________abroad. Her parents are old.

He would be sure ________ disasters if I didn't stay to keep an eye on him.

I would rather________Professor Smith and I would rather you________for him at once.

The ability________an idea is as important as the idea itself.