— The manager of the factory wants to improve production a great deal, but he doesn’t spend much on【

— The manager of the factory wants to improve production a great deal, but he doesn’t spend much on technology.

— I am afraid he won ’t realize his dream. You know ________.

A. empty vessels make the greatest sound

B. you can ’t eat your cake and have it

C. enough is as good as a feast

D. two heads are better than one