It's polite to the person when he or she is talking to you. (注意)
The little girl (亲吻)her mum before she goes to school every morning.
When talking to British people, we should (避免) subjects like age, weight or money.
A long time ago it was (广泛地) believed that there was life on Mars.
The poor (home) boy often did his homework in the street by the light of a restaurant.
Nothing is (possible) if you set your mind to it.