One should remain ______ and think of ways to escape when facing danger.

China needs to strike a balance between maintaining a ______ fast and stable development and economic structural adjustment. 

--- Do you think that the 11th Chinese National Games were a success ? --- Yes, ___! It couldn’t be ____ .

I’m in a hurry. You’d better tell me the truth _______.

 Strong sandstorms are often _____ you cannot see the sun.