Question

Not until he received the  invitation ________to attend the summit held in New York

1. A.
   did he decide
2. B.
   he had decided
3. C.
   had he decided
4. D.
   he decided

Answer 1

A
试题分析:考查倒装句。Not until 位于句首时，主句用部分倒装语序，即一般疑问句语序，故排除B、D选项，再由语境可知此处应该用一般过去时，所以A选项正确。句意：直到他收到邀请，他才决定去参加在纽约举行的峰会。
考点：考查倒装句。