1. It's past the children bedtime. (they/be/ in bed)
=> The children shouldn't go to bed late.
2. Can't they see the 'No Smoking sign? (they/ smoke/ in here)
=> They shouldn't smoke in here.
3. These windows are so dirty. (you/ clean them/ more often)
=> You should clean them more often
4. We are in the library. (we/ talk/ too loudly)
=>  We shouldn't talk too loudly.
6. I think it's going to rain. (we/ take/ our umbrellas)
=> We should take our umbrellas
7. Suzy has to wake up early for school. (she/ go to sleep/ so late)
=>  She shouldn't go to sleep so late.