as fast as his legs can carry him
 

* 1.as quickly as he can

2.as quickly as possible

English Related Words* a can of worms

* a fool and his money are soon parted

* a load was taken off his mind

* a peacock in his pride

* a plague on him

* a shadow of his former self

* abused his office

* accepted his authority

* according to his capability

* according to his means

* according to his needs

* according to his story

* according to his version

* achieved his dreams

* acid fast