One of one
One of many
Pardon meinen lengua
The animal kingdom
All you need is something new
100

A male monarch or sovereign who holds supreme authority over a country or territory.

King.

100
We are part of the European one.

Union

100

From French - "Summary"

Résumé

100

Meaning "slower than it should be", this phrase learned in H4, Unit 9, refers to the velocity of a certain slimey grastropod

"Snail's pace"

100

Change a vowel in this ropey piece of a guitar and get an adjective describing something robust and powerful

String -> Strong

200
You should do one of these for each of your writings on the test.

Draft.

200

Often used in cooking, this, like many deep poetic texts, has many layers.

Onion

200

From Italian - "To the tooth"

Al dente

200

Meaning to "quit due to fear", this phrase mentions an animal consumed in nugget form.

To "chicken out"

200

Change a consonant in this word meaning "uninteresting and boring" and get this 5-letter word referring to a company image

Bland -> Brand

300

This is a representative of a large ethnic minority in Bulgaria.

Gipsy

300

Something you desperately want to avoid making at the exam.

Error

300

From French - "Stereotype plate"

Cliché

300

Meaning "in the wrong place" or "unsuitable for specific locations", this phrase explores the ocean dephts (and above them, in a way)

"Fish out of water"

300

Change a letter in this word meaning "beverage" and get this word meaning "the extreme edge of a steep place or body of water"

Drink -> Brink

400

This is what you would do with someone you are interested in romantically.

Flirt.

400

This is the sound usually made by a bear or a lion.

Roar

400

From French - "Already seen"

Déjà vu

400

Meaning "don't rush", this phrase mentions the carriage-pulling hoofed mammal

"Hold your horses"

400

Change a letter in this regal headpiece and get the facial expression we will all have on the 30th of May.

Crown -> Frown

500

This word, meaning to be direct, can also describe a worn-out knife. 

Blunt.

500

Simply meaning an act or intentional action.

Deed

500

From Latin - "The position being reversed"

Vice versa

500

Meaning "please be patient", this phrase mentions a certain honey-loving forest dweller.

"Bear with me"

500

Change a letter in this word meaning "collision" and get this verb meaning "to destroy or tear into pieces" 

Crash -> Crush