She promised to be here at 8:00, but she never ______.
Maria looked around on the playground _______ looking for something.
-----What do you think of their marriage? -----_______, if I were Kate, I wouldn’t marry him.
Great changes ______ in my hometown in the last ten years.
This school has strict rules. Almost no one can ________ cheating in exams.
John is very tall, so he is easy to ________ in the crowd.