______ it so difficult to live in an English-speaking country that I determined to learn English well.

A. I have felt                      B. have I felt                       C. I did feel                          D. did I feel

______ it so difficult to live in an English-speaking country that I determined to learn English well.

A. I have felt               B. have I felt                C. I did feel            D. did I feel

So difficult ________ it to live in an Enghish-speaking country that I determined to learn English well．

1. A.
   I have felt
2. B.
   have I felt
3. C.
   I did feel
4. D.
   did I feel

So difficult ________ it to live in an English-speaking country that I determined to learn English.

A. I have felt      B. have I felt      C. I did feel         D. did I feel

So difficult ________ it to live in an English-speaking country that I determined to learn English.

A. I have felt      B. have I felt ???? C. I did feel         D. did I feel