234. After the 1911 Revolution, China began to use the Gregorian calendar (solar calendar) and at the same we have also used the lunar calendar(阴历) in which a leap year (闰年)______ every four years.
Shanghai celebrated____one year countdown (倒计时) to the opening of___2010 World Expo on May 1, 2009.
Her joke went too far, which was more than I could ______.
Her answer was so confused that the teacher could hardly make any ______ of it.
His mother had talked to him for many minutes while he was watching TV, But_______.
It seems that creative thinking, which is one of the most___________skills in society, is a matter of habits.