“Is John coming by train？” “He should, but he _____ not. He likes driving his car.”

Doctors say that exercise is important for health,but it__________be  regular  exercise .

--How dangerous it was ! ---Yes, but for the passer-by’s quick action,the girl _____ .

The boss ordered that the work ______ right away.

Thank you for giving me so much help. I _______in the experiment without your support.