Furniture and flooring usually come to mind when we think of ways to use bamboo. Not many of us, ________, think of bamboo clothing.

 _________, the subject belongs to biology.

. Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.

Noise is unpleasant, _____ when you are trying to sleep. 

What a terrible experience! ________, you’re safe now — that’s the main thing.