[ 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.

Random Topics:
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:
Conjunctions & Cohesive Devices › ViewI’m afraid Tim can’t join our Cub group until he’s eight. ________, we’ll put his name on the waiting list.
A. In conclusion
B. In addition
C. However
Grammar › View
Which word shows the correct possession in this sentence?
My _____ dog played with the new toy I got for it.
A. aunt’s
B. aunt
C. aunts
D. ant
Grammar › ViewMy cat … little and cute.
A. am
B. is
C. are
Grammar › View
___ is very good for your health.
A. Swimming
B. Swim
C. Swims
D. Swam
