He was shocked his son playing all days. [ ] A．knowingB．to know C．at knowD．known
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He was shocked ________ his son playing all days.
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A．knowingB．to knowC．at knowD．known
试题答案
答案：B
解析：be shocked to do sth.意为“因为……感到震惊”，to表示原因。 |