A:What color is it?B:No,it isnot.My ruler is yellow.C:529-6403.D:Yes,it is.His ruler is red.

A:What color is it?（2）
B:No,it isnot.My ruler is yellow.（4）
C:529-6403.（8）
D:Yes,it is.His ruler is red.Please call Tom.（6）
E:Is it Tom's ruler?（5）
F:Is that your ruler in the lost and found case?（1）
G:What's his telephone number?（7）
H:It's red.（3）