We students are so busy with our homework that we have no time for outdoor exercise, ______ we have the desire

Are you ___________with your English study—-Yes， I have improved it greatly.

This morning we have classes, and the class is Chinese.

The primary purpose is to _____ those achievements in biological research _____ the public.

I am dead tiredI can’t walk farther，Tom—________，JohnYou can do it