Due to the unreasonable individual income __________，the gap between the rich and poor has become an outstanding issue.
| A．contribution | B．association |
| C．accommodation | D．distribution. |
Studies show that sunshine, fresh air, and plenty of rest often _______ a person’s recovery from sickness．
| A．arrest | B．accelerate | C．betray | D．condemn |
He has little acquaintance _______ music , while he has a wide knowledge ____ painting．
| A．with ; of | B．of ; about | C．with ; about | D．of ; of |
He insisted what he did _______ right and that anyone who broke laws ________．
| A．was ; be punished | B．be ; was punished |
| C．was; was punished | D．be ; be punished |
It’s uncertain _______ side effect the medicine will bring about , although about two thousand patients have taken it ．
| A．that | B．what | C．how | D．whether |
--Sorry, I have to _________ now． It is time for class．
--- OK, I’ll call back later．
| A．hang up | B．break up | C．give up | D．hold up |