A classmate of _________ was here ten minutes ago.
I insisted on ______ my father _______ his medicine every day, but he refused.
Astronaut as he was, he didn’t know _______ he had to _______ in outer space.
He wouldn’t leave the TV set, ________ he was going to have an important exam the next day.
How can you step into the lab with your shoes on? You’re _______ to take them off before you enter it. I told you so!
Jane’s parents suggested that she ______ a medical examination.