On a clear night we can see the stars，but in the daytime they are    .  

A. unavoidable    B. invisible    C. inaccessible     D. unavailable  

根据首字母或汉语提示写出单词或词组的正确形式
【小题1】Weather p            , we will have a picnic in the countryside.
【小题2】You can see the stars on a clear night, but in the daytime they are i        .
【小题3】You are too s         on your child. He just made a few mistakes in the exams; you don’t ne4d to punish him.
【小题4】When we heard his jokes, we all burst into            .(笑声)
【小题5】这次旅行的组织工作全由我朋友负责。
My friend took full          for organizing the tour.(职责)
【小题6】I think the difficulty in finding a proper way to solve the problem is           since we keep trying. （暂时的）
【小题7】对于有些人而言，养成坏习惯很容易，但是除掉它却很难。
Picking up a bad habit is easy but                                  it is really difficult.
【小题8】我们必须使我们的思想和工作适应新的情况。
We must               thinking and work                the new circumstances.
【小题9】只要我有困难，她总是会来帮助我解决困难。
When I am in trouble, she always comes to                             dealing with it.
【小题10】He made up his mind to                           . (戒烟)
【小题11】Lucy held a party                                       (为了庆祝) her birthday.