Passive to active: 'It is alleged/suggested (by Y) that ...' (impersonal it)

1. A.
   Multiple sources suggested the operation was compromised internally.
2. B.
   The operation was compromised, multiple sources suggested.
3. C.
   The sources were suggesting an operation compromise.
4. D.
   The operation had compromised multiple internal sources.

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1. A.
   Insiders were leaking confidential data within the firm.
2. B.
   Confidential data had been leaked by insiders, it is alleged.
3. C.
   Insiders have allegedly been leaking confidential data within the firm.
4. D.
   The firm was allegedly leaking insider data.

Tap an option to check your answer.