Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
All________made______possible for China to succeed in carrying on its reforms and open-door policy.
The pencil________which you wrote just now______me.
The government tried its best to _____ the people’s needs, but the people were still not ______. In fact, what the government did was not______.
Coming into the room, I found them ______ at the table, _____ chess.
If you ______ go, at least wait until the rain stops.