11．0n the whole，ambitious students are more ____ to succeed in their studies than are those with little ambition．

A．possible    B．1ikely    C．capable D．probable

12．When supply exceeds demand for any product，prices are____ to fall.

A．timely    B．simultaneous    C．subject D．qualified

13．The workers agreed to____ the strike if the company would satisfy their demands．

A．call for    B．call forth    C．call off   D．call up

14．I could just see a car in the distance，but I couldn't ____ what color it was-

A．100k out    B．make out    C．get across D．take after

15．He has impressed his employers considerably and ____ he is soon to be promoted．

A．eventually    B．yet    C．finally     D．accordingly   

16．The fire broke out in a neighboring street but the firemen managed to____ it in time．

A．extinguish    B．prevent    C．suppress  D．ruin

17. On this happy occasion，I'd like to say that we are so much ____ to you for your kind cooperation.

A. obliged    B．plunged    C．outraged D．Owed

18. The policeman stopped him when he was driving home and ____ him of speeding．

A.charged    B．accused    C．blamed  D．deprived

19. The Browns lived in a ____ and comfortably furnished house in the suburbs．

A.spacious    B．sufficient    C．wide D．wretched

20. I In order to get a cheap air ticket，we must ____ well in advance．

A.preserve    B．purchase    C．book D．conserve