Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.

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

The_______isnearlydead,soIcannotstartthecaragain.

We can not _______ all the magazines together.

Wecannot_______allthemagazinestogether.