If this product does not give you complete satisfaction, please return it to the manufacturer, stating when it ________.
A．is purchasedB．will be purchased
C．purchasesD．has purchased
A
答案：A　考查時(shí)態(tài)和語態(tài)。句意：如果你對(duì)產(chǎn)品不完全滿意，請(qǐng)退回給生產(chǎn)商，并注明購買的時(shí)間。purchase和it構(gòu)成動(dòng)賓關(guān)系，故應(yīng)用被動(dòng)語態(tài)。此處說的是一般性情況，故用一般現(xiàn)在時(shí)。
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