13.The reason is____________ smoking tobacco causes illness.A. why B because C. that D. because of
We are ready to start at short __________.
I invited her over to my house and showed her the ring, but __________ she left, I noticed the ring missing.
Some areas, __________ their severe weather conditions, are hardly populated.
They hand down the __________ from generation to generation to keep their life alive.
She went to meet him with an air of expectancy, __________ expecting him to bring something.