Read and write.用所给单词的适当形式填空。
1. In autumn, ________ (leaf) are yellow, brown and red.
2. —What ________ you often ________ (do) in summer?
—I ________ (swim) in the swimming pool.
3. Winter ________ (come) in December.
4. —Where ________ Amy ________ (live)?
—She ________ (live) in Australia.