The black hero fought all his life to make black and white people _____.

After the new technique was introduced, the factory produced______ tractors in 1998 as the year before.

—Do you have any idea why Mark is leaving?—No. In fact，everyone is _________about it. 

My niece cares more for new clothes than anything else in the world, so she is very _______ about what she wears.

Jack is late again. It is ________ of him to keep others waiting.