80. Burn not your house to rid it of the mouse.投鼠忌器。

81. All work and no play makes Jack a dull boy; all play and no work makes Jack a mere boy.只工作，不玩耍，聪明孩子要变傻；尽玩耍，不学习，聪明孩子没出息。

82. Like for like.一报还一报。

83. Go for it! Just do it！加油！向前冲！做了再说！

84. You have no goats, and yet you sell kids.你虽无老山羊，却出卖小山羊。