It’s ________ hard for us ________ understand what he said.

A. to; too      B. too; to       C. to; to   D. too; too

It’s ________ hard for us ________ understand what he said

1. A.
   to; too
2. B.
   too; to
3. C.
   to; to
4. D.
   too; too

It’s _______ hard for us ______understand what he said.

A. to; too         B. too; to             C. to; to             D. so; that

It's ________ hard for us ________ understand what he said.

　　　 　　 A.too; to　　 B.to; too　　　 C.to; to　 D.enough; to