[ Grammar for TOEFL ]
The major cause _____ the pull of the Moon on the Earth.
A. the ocean tides are
B. of ocean tides is
C. of the tides in the ocean
D. the oceans’ tides

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Verb AgreementPassive Voice, Modals of Deduction and First ConditionalAdverbial PhrasesModals AuxiliaryVerb-ing and InfinitiveGrammar Like & Linking VerbNoun and Modal VerbsGrammar: was/wereSports VocabularyComparisionsOther quiz:
Grammar: was/were › ViewJoanne and Winnie ______ swimming in the pool.
A. was
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My grandfather was born ___ the 1950s.
A. at
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Choose the antonym of ugly.
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D. nice
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