请根据括号中的中文提示、英文释义或句意，写出句中所缺单词，使句子通顺。
Wish you good luck and great      (成功) in the exam.
To be a     ( someone who flies a plane), you need hard training in flying.
I am using a micro letter, it’s easy to send voice, picture and     (文本)messages.
He is feeling blue, I don’t know whether I should speak to him or keep     (quiet, with no sound at all). 
The aim of “Free Lunch For Children” is to     poor kids with free lunches in western China.