David got a higher grade in the final exam, for, you see, he made        mistakes.

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.

Of course, all students want to increase their knowledge, but I believe that most students today want that knowledge to be _______ to their future career.

(2013 ·吉林长春三校高三调研) Though you've got a tight schedule these days, I should be ________ if you could spare time to attend our meeting today.

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