21．—Have you seen ____ Audi car? I parked it here this morning．
—Is it ____ white one? A young woman drove it away just now．
A．不填;the , B．an; a C．an; 不填 D．a; the
22．James had practiced a lot for his driving test so that he could be sure of passing it at his first .
A．purpose B．desire C．attempt D．intention
