He was proud of being chosen to participate in the game and he ______ us that he would try as hard as possible. ( 章节：3 难度：3)
- A、insured
- B、guaranteed
- C、assumed
- D、assured
正确答案:C
答案解析:有
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He was proud of being chosen to participate in the game and he ______ us that he would try as hard as possible. ( 章节：3 难度：3)
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