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.
What’s the use of keeping the secret ______ everyone has already known it?
he party was______success.We sang and danced until it came to_______end at midnight.
There is a new problem involved in the popularity of private cars ___________ road conditions need _____________.
— ______? — Nothing serious, but a bit tired.
--- Sir, I have a favor to ask you. ---___________. A It’s a pleasure B. Go ahead C. What, please D. Help yourself