China ________ rapid economic development and political stability over the past three decades, but with them ________ some social problems.
We won't know whether it will be successful. We won't know whether there will be good _____.
The government placed _____ on the numbers of foreign cars that could be imported.
He ate what he could, and gave the _____ of the food to the birds.
Mary had taken _____ to see that her guests had everything that they could possibly want.
It isn't so much whether he works hard; the question is whether he works _____.