Was it in 1998,when he was still at middle school,______ thi

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Was it in 1998,when he was still at middle school,______ this boy became an expert at computer?
A.which B.where C.that D.when

选C,强调句的疑问形式.
when he was still at middle school是定语从句,修饰1998
原句可以看成 Was it in 1998 （that） this boy became an expert at computer?
陈述句为It was in 1998 （that） this boy became an expert at compute

Was it in 1998,when he was still at middle school,______ thi When was ___ __ was in 1998 when he was in middle school.tha was it in 2002 when he was agt middle school that the boy be It was in 2000 when he was in middle school 这个句子为什么不用强调句It w when he was twelve,he____(study)in a middle school. 反义疑问句He never did well in maths when he was at school,______ It was in 1988,when I was studying in a middle school, 英语翻译1.Was it in 1998,when he was at college,_________ this y I was i_____ in swimming when I was in middle school It was very late at night,he still wenton________________ a. I was in junior middle school when I was sat the age of 13 他 actress,a,famous,was,when,still,was,school,at,I,she 连词成句