[ Grammar ]
Everest _____half a century ago
A. Is first climbed
B. Was first climbed
C. Has been first climbed
D. Has first climbed
Select your answer:
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Grammar › ViewChoose the correct form: They __________ (to visit) their grandparents every summer.
A. visit
B. visiting
C. visited
D. will visit
Punctuation › View
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.