[ Grammar ]
Water _____ at 100 degrees Celsius.
A. boil
B. is boiling
C. boils
D. boiled
Select your answer:

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Grammar: was/wereVerbal TensesClause Markers TOEFL GrammarOffering HelpRelative Clauses and UsagePresent Perfect TenseZero Conditional SentenceRelative ClauseNounsSynonyms and VocabularyOther quiz:
Modals of Obligation and Permission › ViewIf I _______ leave work early because I don’t feel well, I can do that without a problem.
A. allowed to
B. don’t have to
C. can’t
D. need to
E. supposed to
Grammar › View
There is __ bookcase in my bedroom.
A. a
B. an
C. the
D. –
