E-mail is faster than regular mail. It's a biological fact. Little boys are not made of frogs and snails and puppy dogs' tails. If Jack Kennedy were still alive, he'd no longer be young. It made me cry.
Periods end sentences.
Except when they're questions. All the members of the Daughters of the American Revolution are women. Speaking of which, with John Lennon dead, the Beatles never can reunite. Jack Sprat's wife should change her diet. Take it from someone who's had triple bypass.