He always has a lot of _______ ideas in his mind , and sometimes we do not even know what he is thinding about.

Pleasebeserious.Iamnot_______.Youshouldconsideritcarefully

It is not ---_______ for me to return all the books to the library now because I still need some of them for my research.

Many kinds of animals are believed to have _________from the earth

Withthe_______ofMary,allthegirlstudentsareeagertogototheparty.