______ with care, one tin will last for six weeks.
A．UseB．UsingC．UsedD．To use
C
考察非謂語(yǔ)動(dòng)詞（作狀語(yǔ)）。非謂語(yǔ)動(dòng)詞的考題，若空格在句首，句中有逗號(hào)，則應(yīng)判斷空格部分與逗號(hào)之后的主語(yǔ)主被動(dòng)關(guān)系。本句中的one tin和use應(yīng)為被動(dòng)關(guān)系，選擇動(dòng)詞的過(guò)去分詞形式。句意：小心使用的話，金屬罐兒可以用六周。
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