What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

(a)  

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

(a)  

What can fill a room but takes up no space?

(a)  

I turn once, what is out will not get in. I turn again, what is in will not get out. What am I?

(a)  

People make me, save me, change me, raise me. What am I?

(a)  

What breaks yet never falls, and what falls yet never breaks?

(a)  

What goes through cities and fields, but never moves?

(a)  

What does man love more than life, hate more than death or mortal strife; that which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

(a)