[ Science ]
Scientists have found only 2 substances in the whole universe. What are they?
A. Matter and Air
B. Oxygen and Mass
C. Matter and Energy

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Conjunctions and Verb TensesModal "Have to"Prefixes SuffixesHomophonesGrammar - Present Perfect with already, just, yetModals of ProhibitionSimple Future - PassivePronouns and AntecedentsModals for ObligationPresent and Past TenseOther quiz:
Grammar › ViewCarla feels ______when she’s relaxing in the garden with a good book.
A. happier
B. more happy
Grammar › View
When we ………….. (see) Ati and Wia, they …………… (play) tennis.
A. were seeing, were playing
B. saw, were playing
C. were seeing, played
D. see, play