【題目】If you are _______ (sure) about anything, just ask. Remember, no doubt leads to nothing.

【答案】unsure

【解析】

句意:如果你對什么事情不確定,就問。要記得,沒有疑問就沒有結(jié)果。

根據(jù)句意要問,可知是如果對事情不確定,故sure確定的要加前綴un表示不確定的。故答案填unsure。

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