Studies show that people are more ______ to suffer from back problems if they always sit before computer screens for long hours.
The servant did _____ she could ______ the revolutionary.
The missing boys were last seen _____ near the river.
He gave me the phone number in order ______ contact him when we are in need of help.
You know that widely reading helps ______ your knowledge so I can’t help _____ the housework every day.
The factory is five kilometers ______ from his house.