was known to all, William had broken his promise he would give us a rise.A. As;
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___________was known to all, William had broken his promise ___________ he would give us a rise.
A. As; which B. As; that C. It; that D. It; which
试题答案
B
解析：从句意分析，promise后是同位语从句，因此首先排除A、D两项；如果用it作形式主语，all之后不能用逗号，故选B。