问题补充:
It was only in 1997 J. K. Rowling completed the first Harry Potter story, was also known as Harry Potter and the Sorcerer’s Stone.
A. that; that
B. that; which
C. when; that
D. when; which
答案:
A. that; that
(答案→)B. that; which
C. when; that
D. when; which
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