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If the boy had _____ the dog alone, it wouldn't have bitten him.

   A. put                     B. set                           C. left                          D. led

If the boy had _____ the dog alone it wouldn't have bitten him.

A. set          B. left             C. had          D. put

If the boy had _____ the dog alone it wouldn't have bitten him.

   A. set    B. left    C. had    D. put

If the boy had _____ the dog alone it wouldn't have bitten him.

   A. set    B. left    C. had    D. put

If the boy had _____ the dog alone it wouldn't have bitten him.

A. set    B. left    C. had    D. put