The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
The shoes are __________ than I expected.
An American scientist reported an unexpected and __________ discovery.
In the experiments, the scientists found that water __________ at 100℃.
I am sure your parents are proud __________ you.
—Are you used to __________ in the north with the old couples? —Yes, I am glad to find out that coal is used __________ electricity for home use.