Inexperienced as he is, he has succeeded______other experienced researchers fail.A．whereB．

As he has ___ our patience, ？

As he has ___ our patience, we’？

He is talking so much about America as if he ____ there.A、had beenB、has beenC、wasD、been

Poor as is he， he is honest. （)

In "He has had his hair cut", cut is used as ______.A．a predicateB．an adverbialC．an object

Ted has told me that he always escapes______as he has got a very fast sports car.A．to fine