we should be( ) when we are inthereading room

we should be( ) when we are inthereading room when we are in the reading room we should ( ) We mustn't be nervous when we are in danger.We should _____ When we are on a bus ,we should be ready ___the old man and We should be careful when we ___a busy street we should be very polite when we c____ people we should learn to be i__ when we grow up. What should we do when we are lost what should we do when we are on a bus? 翻译 We should be laughing more than we are. we are going to be good friends when we are older 对 when we We should be friendly______animals.