It is natural for young people to be critical of their parents at times and ______ (因为他们之间的误解而责备他们).
National income available for spending was almost ______ (多三分之一) it had been in 1950.
The Mid-Autumn Festival is a traditional Chinese festivity and ______ (崇拜月亮的风俗可以追溯到) as far as the ancient Xia Dynasties.
Romans had special songs for Valentine’s Day and they sang them on that day.