Question

Not until I had arrived home______ my appointment with Michael Smith.

1. A.
   did I remember
2. B.
   that I remember
3. C.
   when I remember
4. D.
   had I remember

Answer 1

A
考查倒装结构。Not until放在句首，主句的主谓要发生倒装，根据语境用一般过去时，选A。