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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

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

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

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

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