Depression is the leading cause of suicide, __ __ in turn is the third leading cause of death among 15 to 24 year olds in the United States.
At that time I had no idea ________ I could hand it to him without being seen.
Now there is a danger ________ the ground may fall in under the heavy traffic.
We think it possible ________ the local government will be able to solve the housing problem.
She took it for granted ________ I'd be back home an hour ago.
I asked her in English ________ she was, and she told me ________ she was an actress.