He must be in the park , ____ ?
Can you tell me the way you think of________ the problem?
As a new graduate,he doesn't know ________it takes to start a business here.
The snow lasted a week, ________a serious traffic confusion in the whole area.
About________of the workers in that steel works________ young people.
--- Did you tell Julia about the result? ---Oh, no, I forgot. I _____ her now.