Question

_______, everything would have been all right.

1. A.
   He had been there
2. B.
   There he had been
3. C.
   Been there he had
4. D.
   Had he been there

Answer 1

D
这是一个与过去事实相反地虚拟语气。在条件句中省略了if，故助动词had 前提，使用倒装。正常语序为：If he had been there,everything would have been all right.
所以选D。