The winner of the race is tall and thin; he _______ be my friend, Mike, who is short and fat.

The students are _______ to ride the public bicycles to Mount Tianlong for a spring outing.

My parents often prevent me ________ computer games on school days.

How could you be so rude as towalk in here in the middle of my class—_____________

They insisted that he _____ present at the ceremony the next week.