Studies have shown that children grow and develop quite normally on a diet ___ plenty of bread and vegetables with small amounts of milk and meat.

For breakfast he only drinks juice from fresh fruit________on his own farm. 

Don’t worry, the guide will tell you how to avoid ______ ill while travelling.

       by his friends and relations，he decided to send his invention to the patent office to get recognition for his successful idea． 

Unless _________ by the police, you should keep silent over the accident.