He’s never lost a day’s work through illness. He’s as _____ as old boots.

 Only _____ people can have a good understanding of the lecture given by the scientist.

Yesterday our head teacher made such an　____　speech that we all felt　_____. 

Compared with other animals, snakes are believed to be below ____ in intelligence.

—Let me help you , Tom !—Thank you . I can do it. Here’s         to hold all these things .