（2014年北京市西城区高三5月二模试题）23. It’s been discovered in the study ______ people are more relieved after forgiving others.

You behungry after the long walk. Help yourself to some cakes.

g and running are the oldest andnewest, excellent _________ exercise for all ages and fitness levels.

ired man donated most of his savings to the school damaged by the earthquakein Yushu ,________the students to return to their classrooms.

当别人夸你英语说的好时，你应说：