填空题 The Italian businessman spoke fluent Chinese and demonstrated his Chinese ______ at the World Expo held in Shanghai.

填空题 According to the media, China's wind power capacity has ______ the previous level considerably.

填空题 The lawyer proclaimed that they couldn't jump to conclusions because acceptable conclusions must be ______ supported by evidence.

填空题 In addition to a sense of sight, bees also have an unusual sense of smell, so they can ______ more than 10 similar flower odors.

填空题 Moving forward even in the face of great difficulties has become the most important ______ in my life and career.

填空题 The guest speaker decided to ______ his speech in order to leave enough time for his audience to ask questions.

填空题 To help the employees become more communicative, the company offered several workshops to those who were not ______ in social interactions.

填空题 Some parents try to help solve the problems that their sons and daughters have in ______ to their college life.

填空题 Researchers conducted a set of psychological tests to determine the negative consequences of a sleep ______ .