Question

---Has Li Hong gone to the library?
---Pardon?
---I asked           the library.

1. A.
   if Li Hong had gone to
2. B.
   if had Li Hong gone to
3. C.
   Li Hong had gone to

Answer 1

A
考查宾语从句。“李红已经去图书馆了吗？”“请再说一遍。”“我问的是李红是否已经去图书馆了。”宾语从句要用陈述句语序。A、C项的had放在主语前，是疑问语序，排除A、C。故选B。