.They were __________ to produce carbon,nitrogen,water and other gases.
____ to everyone the importance and value of these historic sites, the government has strengthened regulations to protect them.
—Mary’s been offered a job in a university, but she doesn’t want to take it.—_______? It’s a very good chance.
Out of the train_______, well-dressed and waving to the crowd.
The new method is indeed advanced and effective, quite different from _____ already in use.
—I am going to travel to England. Would you consider telling me about your experiences there?—__________.Let’s discuss it over drink.