11.  One day, he suddenly head the mirror's voice .

12.  Because many classes had P.F. lessons outside, they made a lot of noice and affected us to head lessons.

13.  After six minutes, Yun zhi chao caught out of bounds and headed the ball .

14.  In George Orwell's "Animal Farm", three pigs headed by Napoleon led all the animals to throw away the farmer's domination under the flag of "All animals are created equal".