So difficult____it to acquire a large vocabulary without the..
So difficult____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .A.he have feltB.have he feltC.he did feelD.did he feel
John was fired by his factory and only then ________ how wro..
John was fired by his factory and only then ________ how wrong he was to be lazy and careless.[ ]A. had he realizedB. he had realizedC. did he realizeD. he realized