(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.

   —How many people attended the exhibition?—I’m not sure. _____ speaking, a thousand or more.

—Ann, I am worried I’m getting fatter. What shall I do?—I think you should eat________ food and do more exercise.

The students were ________ over the ________ problem，listening to the teacher with a ________ expression on their faces.

Mothers holding jobs outside the home should have ________ schedules to make it easier to care for their children.