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 feltC.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 IC.Im the sameD.So it is with me

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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

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all scientists from Asia.A.Were present at the meetingB.Pre..

all scientists from Asia.A.Were present at the meetingB.Present at the meeting wereC.Are present at the meetingD.Present were at the meeting

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— Is everyone here?— Not yet. Look, there ______ the rest ..

— Is everyone here?— Not yet. Look, there ______ the rest of our guests! [ ]A. come B. comesC. is coming D. are coming

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