[ Grammar ]
Choose the sentence with correct comma usage.
A. My dear old grandfather who is seventy years old still jogs everyday.
B. My dear old grandfather ,who is seventy years old, still jogs everyday.
C. My dear old grandfather, who is seventy years old still jogs everyday.

Random Topics:
ProverbsVerbs + Gerund or InfinitivePhrasal verbs and Prepositional PhrasesNounsModals of PredictionSimple PastModals - Conditionals - Future TensesPresent, Past, and Future TimePrefixes SuffixesPrepositions and AdverbsOther quiz:
Subject Verb Agreement › ViewThe pants ______ in the bag.
A. was
B. were
Mixed Tenses › View
The soldiers were no longer hungry. They _______ a heavy lunch at noon.
A. were eaten
B. have eaten
C. were eating
D. had eaten
Grammar › View. ____ you celebrate Christmas last year?
A. Are
B. Did
C. Do
D. Will
Grammar › View
Although she was smart, she didn’t understand the problem.
A. complex sentence
B. NOT a complex sentence
