[ Punctuation ]
Choose the correct sentence that uses a comma with a non-defining relative clause.
A. My grandfather, a professor, has written a book.
B. My grandfather a professor has written a book.
C. My grandfather has written a book, a professor.

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Gerund vs InfinitiveConditionals / Unreal PastComparison of Adjectives and AdverbsPresent TensesGrammar - Countable/ UncountableWish clauseWas and WereWould/would like - affirmative/negativeNo Excuse Words / Conjunction SOModals of AdvisabilityOther quiz:
Grammar › ViewLet´s go out for ____________ dinner.
A. no article
B. a
C. the
Modals and Active and Passive Voice › View
. ______refers to being allowed or given the right to do something, where you have the choice to accept or decline.
A. Permission
B. Obligation
C. Prohibition
D. Ability
Grammar › ViewMy cat … little and cute.
A. am
B. is
C. are
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___ is very good for your health.
A. Swimming
B. Swim
C. Swims
D. Swam
