One fact is Crystal always keeps a toothbrush in his pocket for good luck when he is the

问题补充：

One fact is Crystal always keeps a toothbrush in his pocket for good luck when he is the host of the Academy Awards.

A. little-knowing ; 不填

B. well-known ; which

C. little-known ; what

D. little-known ; that

答案：

A. little-knowing ; 不填

B. well-known ; which

C. little-known ; what

(答案→)D. little-known ; that

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