1.Anything it eats.

　　2.Autumn. Because it is also FALL.

　　3.A secret.

　　4.March fourth.When a war breaks out,they'll have to march forth.

　　5.It depends on how many people are standing in it.

　　6.A photographer.

　　7.The number 8.

　　8.Take away the upper half and 0 is left.

　　8.A clock.

　　9.All of them. Each month has its 28th day.

　　10.All horses have forelegs (four legs) in front and two in back, so they all have six legs.