Trust is needed in the whole society, which requires parents to obey their own rules and set a good example _______ children can trust them.
Take the medicine and have a good sleep, but if the pain continues, ______ your doctor.
The earlier settlers learned to farm the land through ______ and error.
The moment she heard of the news that her son was involved in the crime, she ______ pale.
I didn't see you at the meeting. If you ______ , you would have met my brother.
Don't use words and expressions or phrases ______ only to people with specific knowledge.