Water，which seems so simple and common，is________makes life possible.
| A．what | B．that |
| C．which | D．how |
— At the end of the day we can gather our guests to enjoy fine wine.
— You seem to be getting off the point. How is that _______ to this discussion?
| A．suitable | B．tentative | C．parallel | D．relevant |
It is true that at times the U.S.A. has experienced periods of_______unemployment as well as labor shortages.
A. available B. acute
C. accessible D. ashamed
We would appreciate it if customers don't______ to leave their suggestions and expectations for our product.
| A．hesitate | B．pretend | C．undertake | D．offer |
Lily was talking to our teacher about examination, when suddenly Tom _______.
| A．cut off | B．cut out | C．cut up | D．cut in |
While I_________that he is an excellent leader,I don’t think he can do a good job in this company because he is too careless.
| A．reflect | B．recommend | C．acknowledge | D．urge |