1.   The knife had pierced his heart, but incredibly he was still alive.

2.   At one point he tried to stab her but she moved aside and the knife pierced the mattress.

3.   A knife should pierce the beet, but it should still be firm.

4.   Cut the unpeeled pumpkin or squash in thick slices and cook in boiling salted water until a knife pierces the flesh easily.

5.   I smiled, trying to receive her comment in the spirit in which it was delivered, but the knife had already pierced my flesh, or my heart.

6.   The knife pierced her lung and her breath comes in jagged little spurts.

7.   The knife pierced Dennis through the heart.