[ Vocabulary ]
composed of two or more separate elements chemically combined
A. atom
B. element
C. compound
D. molecule

Random Topics:
Prepositions of MovementContrastive ConjunctionsGerunds and Infinitivestoo / enoughWish SentenceVerb PhraseVerbs & Verb TensesTense,noun,preposition,quantityRegular and Irregular VerbsAdverbial Clause, Noun ClauseOther quiz:
Modals › ViewSome people are very rich and they _________ to work for a living.
A. don’t have to
B. shouldn’t
C. must not
D. hadn’t better
Grammar › View
We _________ a book.
A. Am reading
B. Is reading
C. Are reading
Natalie likes ___ milk ___ cream cake.
A. neither … nor
B. since
C. unless
Subject Verb Agreement › View
Mary and John usually … together.
A. play
B. plays
