birthday is ___ the night of November 8th.

The tall building has ______ floors. And Tony lives on the ______ floor.

The following chapters provide step-by-step instructions for practical _______ of genetic (基因)engineering to agriculture.

He was born in Shanghai ______ February 5, 1989. [ ]

Some students often drop litter carelessly in our school. What can we do?- We can _______ some signs to remind them not to do that again.