1.  He forced himself to listen in the class although he could hardly comprehend anything and began to study late into 2 or 3 o'clock early in the morning.

2.  "NO1" force us to do better and better, excel others, and learn more from others.

3.  The loss of ice forces polar bears to swim across a long distance of 50-100 kilometers just to get on shore, during which only the fittest survives.

4.  The dear tuition and heavy debt force poor students to consider their situation and future plan even be an obstacle to the development of China's higher education.

5.  No one force you to do the things you are doing.

6.  He force people to build the great wall and a lot of gorgeous palaces, during which numerous people die.

7.  No one force them to do.

8.  The active participation in political lives forces the government to perform more honestly, efficiently and responsively.

9.  They force themselves to perform perfectly as much as possible.

10.  This kind of pressures force them to be tired in body and in mind.