根据句意，用方框中所给单词的适当形式填空。（每小题1分，共5分）。

success , lazy , twelve, warn, German

Next Sunday is my son’s  ________  birthday .
The _________ a person is, the more things he has to do tomorrow.
A good plan can make your study _____________.
Travelers _____________that a new flu called H7N9 has arrived in Asia.
This morning I met some ________ in the supermarket.