. Both of my parents insisted a computer for me but I don’t think it is necessary.A. to

问题补充：

. Both of my parents insisted a computer for me, but I don’t think it is necessary.

A. to buy

B. buying

C. on buying

D. in buying

答案：

A. to buy

B. buying

(答案→)C. on buying

D. in buying

解析：可联系答.案.网客服索取。