We don’t have to keep these old chairs any more. ________, they are falling apart（支离破碎）.

—Can you describe a distinctive characteristic of this animal?—Its neck can be extended ________ of its body.

____ most children nowadays are the only chidren, they tend to be more self-centered．

The clerks were at work so ____ that nobody realized it was already lunch time.

It seems that living green is               easy and affordable. A small step makes a big difference.