[ Vocabulary and Grammar ]
Air, food and water are ________ to human beings.
A. unquestionable
B. indebted
C. undeniable
D. indispensable

Random Topics:
Phrasal verbs and Prepositional PhrasesGrammar - TOEICContinuous TenseGrammar and PunctuationVerb Forms and PrepositionsAdverbs of TimeGrammar and Sentence StructureAdverb PhrasesPresent Simple QuestionsModals and InversionOther quiz:
Grammar › ViewMy mother and I went to ______ hospital to visit her friend.
A. a
B. an
C. the
Conjunctions and Pronouns › View
Identify the conjunction of purpose in this sentence: ‘She saved money so that she could buy a new phone.’
A. although
B. because
C. in order to
D. so that
Mixed General Quiz › ViewA person who makes things out of wood is called a ___.
a. miner
b. traitor
c. carpenter
Grammar › View
I don’t know whether I’ll go out or not, it depends ___ the time.
A. at
B. on
C. in
D. with
