It is comforting to see that ________, we are doing our part for the environment.
___ some teenagers don’t realize is ___ difficult life can be after they get addicted to drugs.
Among Asimov’s most famous works of science fiction, one ______he won an award, was the Foundation Trilogy.
When I approached to the subway entrance, an explosion occurred. This ___my first experience, I got into panic
Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
You would not have made so silly mistakes , but it is a pity you _______ my advice.