-I didn't go to the art show, because I lost my ticket．-You______have borrowed mine I didn't go to see it anyway

—A shy boy like John ________ give up a secure job and start his own business!—Yes，nobody had expected that. 

--- Are you in a hurry? --- No, in fact, I’ve got plenty of time. I _______ wait.

Teenagers _______ allowed to drive in the street ．

Generally my father is a mild man, but when he gets angry, he ______ be fierce.