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.
—Could you do me a favor?—It depends on _________ it is.
He often depends on others. _________,he doesn't do things by himself.
_________ I can see, there is only one way to pass the driving test.
It's already 10 o'clock and father is _________ to walk in at any moment.
It was not until we came back from outside _________ out of his bed.