ch of the animal world, night is the time ________ for sleep – pure and simple.

________do you spell computer—C-O-M-P-U-T-E-R.

The desk that ________ clean so I could do homework was always surrounded with bowls of bad milk，old magazines and so on

I my hometown for a long time. I really miss it!

27．After the adventure, the children returned home, ______.