_____ you’ve got a chance, you might as well make full use of it.
If you miss this chance, it may be years ____ you get another one.
I just heard____ bank where Dora works was robbed by____ gunman wearing a mask.
Niki is always full of ideas, but is useful to my knowledge.
Little Tom sat watching the monkey dancing in front of him.
The exhibition tells us we should do something to stop air pollution.