is certain is that Bill will recover from his injury in time for the football match.A. As

发布时间：2020-08-16 13:58:18

     is certain is that Bill will recover from his injury in time for the football match.
A. As
B. It
C. That
D. What

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A. As
B. It
C. That
(答案→)D. What
解析：考查名词性从句。句中what引导主语从句，在从句中作主语，故选D。
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