—What’s this?—It’s orange.A、a B、an C、the
---The air pollution is terrible. --- It will be worse we take action to protect the environment.
_______ of us felt very tired but quite happy after _______ sports meeting.
We found ________ more interesting to watch horror films.
If there no buying and selling of animals, there no killing in nature.
He a director since he graduated from university in 1962.