1 David's new bicycle is blue.
2 A: Are these your books? B: No, they aren't.
3 My children are 8 and 6 years old.
4 I am not interested in baseball. I think it's boring.
5 We can walk to the supermarket. It is not far.
6 A: Are you a teacher? B: Yes, I am.
7 A: Are those birds from South America? B: The red one is but the blue one is not.
8 When is your birthday?
9 Kate and Sandra are at work today because it is a holiday.
10 You are wrong. 9 x 9 is 81, not 82.
11 Is this the right bus for the city centre?
12 Where are my shoes?