问题
选择题
He was proud of being chosen to participate in the game and he ______ us that he would try as hard as possible.
a. insured b. ensured c. assumed d. assured
答案
答案：D
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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.
a. insured b. ensured c. assumed d. assured
答案：D