As Polly was riding on the train, she sensed that she was _____ by a tall man in a dark coat.
--This is the first time I ____ pictures with my own camera.--It’s time that you ___ a picture of me.
If we ___ the other road, we might have arrived here in time for meeting.
He is not ____ to be present at the meeting tonight.
Being young means having all kinds of possibilities, so you should challenge your limits and go _____ your boundaries.
The idea ____ he didn’t have to stop at the red light at night caused the traffic accident.