(Alex: Each correct response will be two words, but by adding one letter, the words will have different meanings and will be spelled differently.)
The slip of paper needed for entry into an event; add a letter & it's this dense growth of bushes
Ticket
Thicket
The White Queen has a really baaaaaaaad day when she starts bleating & turns into one of these
A sheep
When parents hear this word, they think "heavy snowstorm"; when teens hear it, they think "yummy treat from Dairy Queen"
Blizzard
The earliest authentic copy of his "Star-Spangled Banner" sold at public auction in 1934
Francis Scott Key
Don't give the principal any of this mouth part that's used to form words
Lip
To go after wild game; add a letter to get this "ghostly" verb
Hunt
Haunt
This egghead egg-splains that the beautiful cravat he's wearing was an un-birthday present
Humpty dumpty
Now you can carry this brand's famous pudding in your pocket, in the form of X-Treme Pudding Sticks
Jello
The part of a door you spy through, or the Eta Carinae nebula you might spy in the sky
Keyhole
God took this body part from Adam to make woman
Rib
Logs fastened together for floating on water; add a letter to conjure up this current of air
Raft
Draft
These two chubby little men resent Alice staring at them: "If you think we're wax-works, you ought to pay, you know"
Tweedle Dee and Tweedle Dumb
Kraft makes this foamy brand of dessert topping in seasonal flavors: strawberry is for spring & summer
Cool whip
Qwerty is a standard format for one of these
Keyboard
Anyone cool knows this is a person's haunch
Hip
To go over a subject again; add a letter & get this advance movie screening
Review
Preview
This single-horned beast is stunned to meet Alice because he always thought children were "fabulous monsters"
A unicorn
Smucker's recipe for sweet & sour hot dog bites calls for this classic flavor of jelly
Grape
Democrat Zell Miller of Georgia delivered this address at the 2004 Republican National Convention
Keynote
You'll find this body part at the center of a hurricane
Eye
To cut or chop; add a letter to build this lowly dwelling
Hack
Shack
This feline flower tells Alice most flowers don't talk because their beds are too soft & they're always asleep
Tiger Lily
Bored with beef jerky? Try the jerky made from this soybean curd
Tofu
In musical notation, it's the grouping of sharps & flats at the beginning of each staff
Key signature
Listen to Mark Antony, who might borrow one from a friend, Roman, or countryman
Ear