[ Grammar ]
This is Mary, ________ brother is my best friend
A. who
B. whom
C. that
D. whose
Select your answer:

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Articles › View_________ Everest was first climbed in 1953.
A. The
B. /
Grammar › View
I’ve never seen this problem before.
A. This is the first time I have seen this problem
B. This is the first time I see this problem
C. This is the first time I saw this problem
D. This was the first time I saw this problem
