So difficult______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?

A. he have felt                                                    B. have he felt?

C. he did feel                                                            D. did he feel?

So difficult____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?

A. he have felt                                                    B. have he felt?

C. he did feel                                                            D. did he feel?

So difficult_____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .?

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

So difficult_____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .

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

So difficult         it to acquire a large vocabulary without the help of a teacher that he was close to giving up.

A．he has felt        B．has he felt          C．he did feel          D．did he feel