[ Grammar ]
Great numbers of tiny shelled animals ………….. on the ocean floor.
A. live
B. living
C. they will live
D. if they lived

Random Topics:
First ConditionalAdverbs of How Something is DoneSo or SuchArticles and QuantifiersGrammar (Adverbs, Prepositions, Prepositional Phrases)Phrasal Verb and ModalDo / Have / Can - Basic QuestionsAction vs Linking Verbs/ Verb PhrasesVerb FormsInfinitivesOther quiz:
Personal Pronouns › ViewThis is Adam. ________ likes to play computer game.
A. She
B. He
C. I
D. You
Grammar › View
Identify all the adjectives.
Sudoku is a logical puzzle invented by an American architect.
A. Sudoku
B. logical puzzle
C. invented
D. logical, American
Tenses › ViewI shall walk to the theatre unless it _____ heavily.
A. was raining
B. will rain
C. would rain
D. rains
E. rained
Idioms › View
Don’t you think we should go ___ our plans again?
a. down
b. through
c. on
