21. As far as I know, there is _________ car in this neighborhood.
A. no such B. no such a C. not such D. not a such
22. In the good care of the nurses, the boy is________ recovering from his heart operation.
A. quietly B. gradually C. practically D. actually
23. I would be very _________ if you could give me an exact reply.
A. pleasant B. grateful C. satisfied D. helpful
