Sometimes, ________ we show our gratitude for a person is reflected in the kind of food we serve him or her.

A．when B．whether C．why D．how

 

D

【解析】考查主語從句。句意為：有時我們?nèi)绾伪磉_對一個人的感激之情會體現(xiàn)在招待他或她的食物種類上。此處用how作方式狀語，引導(dǎo)主語從句，故D項正確。

 

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