[ Mixed General Quiz ]
The Ohio River is one of the most important rivers ___ the United States.
a. on
b. at
c. in

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Present Continous TensePresent Perfect & Past Simple TenseParts of Speech and GrammarPast Tense, Recount Text, and Future TenseTo Infinitive or GerundPossessive Adjectives & Possessive PronounsGerund and InfinitiveGrammar - Present Perfect TenseOpinion / AgreementVerb & GrammarOther quiz:
Preposition of Time › ViewWe are leaving early ____ the morning.
A. in
B. on
C. at
First Conditional › View
We will not be able to conclude the assignment by tomorrow , if we keep postponing the research work.
A. Yes
B. No
Modal Verbs › ViewYou ___ eat more vegetables.
A. could
B. would
C. Should
Mixed General Quiz › View
Sir Edmund Hillary, one ___ the first men to climb Mount Everest, was a New Zealander who trained first in the New Zealand Alps.
a. (nothing)
b. an
c. of