.The building burnt down in a big fire. was the base on which it stood.A. What remainedB.

问题补充：

.

The building burnt down in a big fire. was the base on which it stood.

A. What remained

B. All remained

C. What was remained

D. All what remained

答案：

(答案→)A. What remained

B. All remained

C. What was remained

D. All what remained

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