[ Passive Voice and Modals ]
Marie Curie discovered _________________________.
A. poland and radium
B. polonium and calcium
C. polonium and radio
D. polonium and radium

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How much and how manyThings in EnglishGrammar for TOEFLTemporal Conjunctions and ConnectivesNoun and Modal VerbsRegular Plural NounsConditional Type 1Modal Verb Gerund or To InfinitiveCompound and Complex SentencesIN, ON & ATOther quiz:
Grammar › ViewSiti __________ Rina are in the Recycling Campaign Committee
A. or
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My internet service was ___ because I didn’t pay the bill
A. beehive
B. colony
C. cut off