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        is known to all that the Amber Room belongs to the Russians.

A. As                B. Which             C. It                D. What

______ is known to all that the Amber Room belongs to the Russians.

A. As　　　　　 B. which　　　　 　　C. It　　　　　　 　　D. What

_____ is known to all that the Amber Room belongs to the Russians.

A．As               B．which            C．It                D．What

24. ______is known to all, the Amber Room belongs to the Russians.

A. As           B. Which             C. That        D. What

______is known to all, the Amber Room belongs to the Russians.

A. As 　　 B. Which 　　　 C. That 　 D. What