[ 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 › ViewWhat is the abbreviation for January?
A. Jan.
B. Janu.
C. Janr.
D. Jry.
Grammar › View
Time-management is a particularly important _______, which should be taught for students as soon as possible.
A. live skill
B. literacy skill
C. life skill
D. survival skill
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
