问题
选择题
If this product does not give you complete satisfaction, please return it to the manufacturer, stating when it ________.
A．is purchased
B．will be purchased
C．purchases
D．has purchased
答案
答案：A
答案：A 考查时态和语态。句意：如果你对产品不完全满意，请退回给生产商，并注明购买的时间。purchase和it构成动宾关系，故应用被动语态。此处说的是一般性情况，故用一般现在时。