As we all know, children are always ________ about everything fresh to them.

—Is the White House _________ to ordinary visitors?  —Of course. 

Some parts of the water are very shallow. But in some places it is very very___________.

_____explanation is necessary.

China’s goal of 7.5 percent GDP growth this year, though moderate in comparison with previous rates, is not cause for concern since it could still generate ________ volume wealth.