is known John studies in is considered the best school in the city.A. Which; whichB. Wh

问题补充：

is known, John studies in is considered the best school in the city.

A. Which; which

B. What; what

C. It; which

D. As; what

答案：

A. Which; which

B. What; what

C. It; which

(答案→)D. As; what

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