It was not until the beginning of the meeting _____ he realized _____ I told him was the only possible way to deal with the problem.

It was not until the beginning of the meeting _____ he realized _____ I told him was the only possible way to deal with the problem.

A．that; what         B．what; that         C．when; what        D．when; that

It was not until the beginning of the meeting _____ he realized _____ I told him was the only possible way to deal with the problem.

1. A.
   that; what
2. B.
   what; that
3. C.
   when; what
4. D.
   when; that

It was not until the beginning of the meeting _____ he realized _____ I told him was the only possible way to deal with the problem.