[ Science ]
The blanket of air that envelops the earth is called _________ ?
A. Upper crust
B. Hydrosphere
C. Lithospere
D. Atmosphere

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Comparatives and ConjunctionsInfinitives and ING FormsGrammar (want to/ need to/ have to)Grammar - direct/indirect objectsSpeech TensesComparative AdverbsAction vs Linking Verbs/ Verb PhrasesVocabulary and PrepositionsGrammar - TOEICIndependent ClausesOther quiz:
Indefinite and Intensive Noun › ViewYou _______ have the potential to accomplish anything.
A. itself
B. ourselves
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Grammar Suffixes › View
Which word completes the sentence?
I hate peas! They taste _____________.
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Sentence Structure › ViewIf you do your homework, your grades will improve.
A. Simple
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Grammar › View
While __________ EMAIL the computer suddenly went off.
A. i am writing
B. i had written
C. i was writing
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