Complete the text with the correct form of the words given:

Living in a foreign country can be an exciting and (1) _____ (reward) experience. It can also be a very challenging one. Many people are unprepared for the (2) _____ (real) of living full-time in a different environment. If you are planning to move to another country on a longterm basis, find out about the culture and religions and how much they play a part in everyday life. This type of research is particularly important in cultures where certain (3) _____  (behave), habits or gestures have different meanings. For example, in many Eastern countries, you mustn't touch people's heads, not even patting the heads of small children. These are very (4) _____ (offend) gestures, but easily done if you are not aware of this. Culture shock has been officially (5) _____ (identify) as a form of long-term psychological stress.

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