What a pity! I missed meeting my boss at the airport because my car was ___in the traffic jam.
Many people enjoy the TV play very much, which ______ real life.
Was it from Mary, _______ was working at a department store, ______ you learned the news?
The white-flag dolphin, ______ rare Chinese mammal, is in ___ dangerous state of dying out.
It is believed that the prices of houses will be decreased by ______ 5%.
I enjoy my job in research because I have to______all the latest developments.