名词单复数与动词时态辨析 — 英语词汇题

听写填空：请根据所听录音（读两遍）补全句子，注意名词单复数与动词时态的正确形式。录音原句为：Over the past three winters, the city ______ (plant) thousands of young trees along its ______ (avenue), and many of them ______ (survive) the severe frost last year.