With his son , the old man felt unhappy. [ ] A.to be disappointedB.disappointing
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![With his son , the old man felt unhappy. [ ] A.to be disappointedB.disappointing](/pic/43_960407.jpg)
With his son ________, the old man felt unhappy.
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A.to be disappointedB.disappointingC.being disappointedD.to disappointing试题答案
答案:B
解析: