America was ___________ by Columbus(哥伦布).

The boy has to practice_________ piano every day.

What doyou think of Jane? —She is to be agood teacher.

Premier Wen delivered a speech at the 5th Session of the 11th National People’s Congress, _________that the government will continue improving the balance between urban and rural development.[ ]

The young man acted strangely during the job interview. He made a bad _____on the monkey.