[ Vocabulary ]
Which situation best uses the word stratification?
A. Layers of rock in a canyon
B. An extra piece of cake being served
C. A person showing kindness
D. A runner finishing a marathon

Random Topics:
Comparison Degree & GerundsPast Perfect and Past Perfect Continuous TenseAdverbs, Modals, Preposition of timeToo or EnoughPrepositions of MovementTime and CalendarNoun Verb AgreementPossessive Adjectives and Possessive PronounsVerbs + Gerund or InfinitiveQuantifiers / Prepositions of Time and Comparative AdjectivesOther quiz:
Tenses › View____he always ______(have) breakfast in the morning?
A. Does _____has
B. Does _____ have
C. Did _____have
Phrasal Verbs › View
My dad has taken ______ the piano. His first lesson was last Monday.
A. up
B. off
C. on