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 |
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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 |