一般现在时与过去时在语篇中的混用 — 英语词汇题
题目
读短文，用括号内动词的适当形式填空。Mia often ___ (walk) through the town garden after school. Last Saturday, she ___ (see) a small bird near the pond. She stayed quiet, and the bird ___ (fly) back to a tree. Birds ___ (need) trees for their homes.