[ 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:
Homophones › ViewHave you been ____ Retha’s house before?
A. To
B. Too
C. Two
Grammar › View
Because of a recent artwork donation, the Libsing Art Museum will soon be displaying a new _____.
A. exhibiting
B. exhibited
C. exhibit
D. exhibition
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
