[ TOEFL Grammar ]
“John isn’t sure that the meeting will be held tomorrow.”
“But I ____.”
A. certain
B. certainly
C. am certain
D. am certainly

Random Topics:
Comparatives, Superlatives, and ModalsPossessive Adjectives and Possessive PronounsPresent ContinousGrammar - Compound SentencesVerbs & Verb TensesAdverbs, Modals, Preposition of timeTenses and PronounsVerb Present Simple TenseAspect or tenses of VerbsInfinitives or GerundsOther quiz:
Grammar › ViewWho is _____ person in your family?
A. tallest
B. the tallest
C. the taller
Preposition of Time › View
___ the past, i never played football, but i am playing it a lot ___ the moment
A. In/in
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A. forms
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Present Simple › View
We ____ breakfast together every morning.
A. eat
B. eats
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