根据下列句子及所给汉语注释，写出空缺处各单词的正确形式(每空只写一词)
The standard                (键盘)of the computer has just over 100 keys.   
Most matter has three states: solid,           (液态)and gas.  
She was the teacher who taught us English         (文学) .  
The third season of a year is          (秋季).  
He is very ill and needs an              (手术).  
This bus is large enough to carry 60           (旅客).
You can click on this       （按钮）to return to a page that you saw earlier.
Her brother has just received his graduation           (证书).  
Mary was always coming up with new ways to attract            （顾客）.
The stars are shining like           (钻石)in the sky .