It was not until he got to the office ________ he remembered ________ the key at home.

1. A.
   when; to leave
2. B.
   that: to leave
3. C.
   when; leaving
4. D.
   that; leaving

It was not until he got to the office ________ he remembered ________ the key at home.

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It was not until he got to the office ________ he remembered ________ the key at home.

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It was not until he got to the office ________ he remembered ________ the key at home.

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