John once worked in a remote mountain village school, which is ______ only on foot.

So far we have done a lot to build a low—carbon economy, but it is ____ideal. We have to work still harder.

There is a ________ look on her face. She must have seen something horrible.

Even if an advertisement does not lie, it does not mean it is altogether _______.

The police failed to come up with ______ evidence, and on that account the suspect was released.