[ Vocabulary ]
What is a glow in the night sky produced in the upper atmosphere by particles from the solar wind interacting with Earth’s magnetic field called?
A. Corona
B. Aurora
C. Photosphere
D. Sunspot
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To Infinitive or GerundWho vs WhomPossessive Adjective and PronounTenses StructurePronouns and AdverbsPast and Present Continuous tenseSubordinating and Coordinating ConjunctionsRelative ClauseModals TensesPresent Continous TenseOther quiz:
Conditional Sentences Type 1 › ViewVivian won’t finish her work if she … right now.
A. doesn’t start
B. won’t start
Regular vs. Irregular Verb › View
It was Julius von Haast who … (study) geology and mineralogy at the University of the Rhine.
- studied
- studyed