Train services are usually ________ and run regularly every day.

The schoolboy,still in bed,said to himself,It’s cold outside,and my bed is __________ and warm.

As the story develops, the young woman has now got a ______ job in a library after several part-time jobs．

The illness of her son is so ______ that she cannot go to sleep at night.

－I want a room for 20 people to have a birthday party．一Unlucklly there is no one