The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
—Volunteering is becoming increasingly popular in China.—Yes. People are now __________ that helping others is helping themselves.
We made Tom __________ director of the department.
---How about the competition last week?---Oh, it was not my day. I got the last place.--- ________. Don’t lose heart, good luck for you next time.
The US government threatened that it would ________ all its investment(投资) from the country if the country didn’t reduce the customs duties.
Naylor ________, in a letter to his teacher, that he was addicted to the Internet.