答案：1. a. It's warm. I wear a sweater.
b. It's hot. I wear a dress.
c. It's cool. I wear a jacket.
d. It's cold. I wear a coat.
2. a. What do you do in spring? I fly a kite in spring. Do you like spring? Yes, I do. Because I can fly a kite.
b. What do you do in summer? I go swimming in summer. Do you like summer? Yes, I do. Because I can eat ice cream.
c. What do you do in autumn? I have a picnic in autumn. Do you like autumn? Yes, I do. Because I can eat fruit.
d. What do you do in winter? I make snowmen in winter. Do you like winter? Yes, I do. Because I can play with snow.