–Are you tired?-- _______. I can’t walk on a step farther and I am dying for some water.
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.
--- Have you gone over what the teacher taught in class? --- Not yet. --- Better remember: ________.