[ 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
Select your answer:

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Noun FormationTenses with Time ExpressionsAdverbs of Manner, Likes and PreferencesConditionalsComparative AdverbsModal and Modal PerfectComparison & Modal Verbs in Passive VoicePresent TenseRelative Clauses with who and whichVerb FormOther quiz:
Present Continuous › ViewWhen___________ to visit us? I miss her.
A. is Giulia coming
B. Giulia came
C. does Giulia come
Present Tenses › View
My dad works nights so we don’t see much of him in the week.
A. This is true just this week.
B. This is true every week.
