Is this ________ key, Tom? —No, that one is ________.

The twins are sleeping. Don’t ________.

To live a green life, we try_________ more energy and produce less pollution.

Can we find before an earthquake?—-Yes. Some animals will run wildly and some plants will come out in the wrong season.

In our city, citizens have free _____ to the library, which makes it easy for them to read any book they like.