So difficult did I find ___ to work out the problem that I decided to ask my partner for help.

       A. myself                       B. us                            C. it                            D. that

So difficult did I find ____ to work out the problem that I decided to ask my partner for help.

A．myself           B．us           C．it         D．that

So difficult did I find ___ to work out the problem that I decided to ask my partner for help.

1. A.
   myself
2. B.
   us
3. C.
   it
4. D.
   that

句型转换

I find it hard to learn English well in such a short time.

I find ________ ________ ________ to learn English well in such a short time.

So difficult did I find ___ to work out the problem that I decided to ask my partner for help.