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
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—I seldom watch TV, but listen to the radio a lot.—_______..
—I seldom watch TV, but listen to the radio a lot.—_______.A.So do IB.Neither do IC.Im the sameD.So it is with me
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
On the National Day, up _____ into the air. Then the crowd ..
On the National Day, up _____ into the air. Then the crowd cheered up.[ ]A. go the balloons.B. did the balloons goC. went the balloonsD. the balloons went