The truck----he bought last year was made in Japan.A.where B

选C,这是一个定语从句,The truck是先行词,是卡车,从句he bought last year was made in Japan,很明显he bought 是“他买”的意思,买什么?自然是买前面的卡车,所以The truck在从句中做宾语,所以用which来引导.