根据句子意思，用括号中所给汉语提示或英语单词的适当形式填空：在答题卡标有题号的横线上，写出空缺处所填单词的正确形式。（每空一词）
We should pay attention to our behavior and try to be good ______.（公民）
The old woman walked ______ the road carefully.（穿过）
Kathy always makes ______ mistakes than the other students in her class.（少）
For some ______ reason, Sam noved to Japan.（未知的）
One of the secrets of our success is to believe in ______.（我们）
Even a child knows September is the ______ month of a year.（nine）
Our notebook computer ______ 5 pounds and costs about $2,000.（weigh）
Yesterday I ______ a new dress at the Macy’s for my mum.（buy）
I didn’t want to be treated ______ from anyone else.（different）
She was ______ in the kitchen when the light went out.（serve）