【单选题】【消耗次数:1】
I am not sure whether I can gain any profit from the investment, so I can’t make a(n) ____ tohelp you.
exact
defined
definite
sure
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相关题目
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【单选题】 — I can’t find my mobile phone. I’m sure it’s in this room. — _______. I’ll call you with my phone. When it rings, you can follow the sound.
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