----Did you happen to see ____ black and ____ white cat?
   ----Is she missing? I told you to take care of her.
     
| A.the; the | B.the; / | C.a; / | D.a; the | 
The husband rushed to the hospital ____ he heard that his wife was injured.
| A.at the moment | B.for the moment | C.in a moment | D.immediately | 
Some people prefer to work and live in Chengdu, for the price of an apartment is less than half of ________ of big cities like Beijing, Shanghai, and Guangzhou.
| A.it | B.what | C.that | D.One | 
—Well, I should say this meeting is ________success. 
  —Just have _______with the organizer and you can learn a lot from him.
| A.a; words | B.a; a word | C./; words | D./; a word | 
—I’m sorry. I wasn’t helpful when you were in trouble.
  —Oh, ________. In fact, you did help me a lot.
| A.thanks anyway | B.it doesn’t matter | C.of course not | D.sure you were | 
—What are you busy with ?
  —The conference _______ in our city next week.
| A.held | B.will be held | C.being held | D.to be held |