[ Grammar ]
Common knowledge to anyone who studies science, the earth ____ on its own axis once every 24 hours.
A. revolves
B. revolve

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Definite and Zero ArticleArticles and QuantifiersTenses and Time MarkersLet & Be allowed toIrregular AdjectivesAspect or tenses of VerbsSimple PresentDemonstrative SpeechPhrase vs ClauseFuture Tense and ConditionalsOther quiz:
Some vs. Any › ViewHave you got _______ potatoes?
A. Any
B. Some
C. A
D. An
Present Continuous Tense › View
She ……………not playing the piano. She is reading a book in her room.
A. Are
B. Is
C. Am
D. Be
If your car is not fixed by the weekend, you can borrow …….…. to pick up your mother.
A. mine
B. any
C. other
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Pronounciation and Grammar › View
In many schools in Vietnam, students have to wear a ………………. .
A. clothing
B. uniform
C. suit
D. coat
