Usually, I’m working in areas ____ have no water such as Kenya and Sudan, ____ famine is a pollution.

I have many friends, _____ some are businessman.

____ is certain, though, is that the mystery of Tutankhamun’s tomb has never been fully explained.

London people always take umbrellas with them, just _______ it rains.

Please take a photo____ stands a tower.

_____ having some money raises our level of happiness, having too much money does not.

This is a difficult and stressful job, but one _____ you can really help people.

The husband rushed to the hospital ____ he heard that his wife was injured.

A few people were killed in the fire, but _____ were saved.     

She often helps the students _____ she thinks are not good at English.