Red-crowned cranes need more people’s help.—Yes. People working in the reserves are doing everything they can ____these birds.

It was ____ that she couldn’t finish it byherself.

In the questionnaire, the subjects are questioned whether they ________ no smoking in the public area.

We enjoy the ______ streets. We don’t like the noisyones.

Was it _____ she heard with her ears ____ really made her frightened?