А 1 Many birds fly south in winter.

2 Ken is writing a book about the Aztec Indians. He'll finish it soon.

3 Mandy usually sits with Sandra during history lessons. But today, Sandra is absent so Mandy is sitting with Beth.

4 We do not wear uniforms to school.

5 "Great John! I see that you are working very hard, today!"

6 My brother does not listen to pop music but today he is listening to Madonna.

7 I do not understand what you are saying. Please speak more clearly!

8 I support Greenpeace because I believe in their philosophy.

9 Our teachers give us a test twice a month.

10 "What are you doing?" "Taste the soup to see if it has enough salt."

B 1 You might hurt yourself with that pair of scissors.

2 Come quickly! Look it is snowing out!

3 I don't know the answer so I will look it up.

4 The buses leave the depot at 9 o'clock every day.

5 When I grow up, I will become an astronaut.

6 If you keep on playing with that knife you will cut yourself.

7 I will wear my new dress to the party tonight!

8 Jane is visiting us these days and we are having a wonderful time together!

9 Don't Worry! The plane will take off in three hours. We've got lots of time!

10 Jenny will be back soon. You could wait for her if you like.

C 1 My father took me to my first football game ten years ago.

2 When I arrived home, Susan was crying.

3 Luke and Tony were fighting over Sheila at the pub last night.

4 I was writing an email when the dog came in.

5 When I was young, my mum walked me to school every morning. In the afternoons, my grandmother picked me up because mum had to work.

6 While I was driving to work, it started showing.