1 Listen! Somebody is playing the piano. It's Ann. She has been playing the piano for half an hour.
2 I met my friend in the shop the other day. When I saw he was buying some books.
3 Why is the child crying now? She has broken her favorite toy.
4 If doesn't rain, we will go to the country.
5 I was listening to music, while my parents were watching.
6 Next week I am going to England. I'm so happy. I always want to visit this country.
7 I have known my best friend for 5 years. He is the kindest person I have ever met.
8 Mu aunt works in the hospital. She has been working as a nurse since 2000.
9 We have been to the circus recently. When did you go there? We went there the day before yesterday.
10 I promise I will help you when I have time.