写出STILL在句子中的词义,词类及作用。
1.THE mother tried to still the crying boy
2.you are clever enough,but your sister is still cleverer
3.we often hear the sounds,of labour going on even in the still of night
4.keep still when you read in the library
5.still.waters run deep
6.the experiment in chemistry is very difficult.still there is hope of success