The Arabian Nights well known all over the world, in which many a story interesting and instructive．
A. is; are
B. are; is
C. are; are
D. is; is
网友回答
A. is; are
B. are; is
C. are; are
(答案→)D. is; is
解析：考查主谓一致。The Arabian Nights《一千零一夜》为书名，故谓语动词用单数；many a + n.谓语动词也用单数，故选D。