描述地球环境变化 — 英语词汇题

以前这条河很干净，现在越来越脏。选择最合适的句子描述�…

洗手后，水龙头还在流水。为了保护地球，哪句话最合适？A.…

Fill in the blank: Many years ago, ___ a big lake here.

用 there be 的过去式完成句子（每空一词）。 1. There ___ (is) a s…

按提示用 there be 句型的过去式（was/were）完成句子：Last year, …

Read and fill. Earth is changing. Ten years ago, the river near our school was c…

Fill in the blanks with the first letter and Chinese meaning. Earth's environmen…

十年前，山坡上有许多树；五年前，树少了一些；现在树比�…

十年前，山上有一大片森林，许多鸟在树上筑巢。后来一些�…

Two years ago, the lake was clean. Now people see many bottles and bags in it, a…

五年前，小岛上有很多树；现在只剩下几棵。根据变化补全�…

根据中文提示，补全单词中所缺的字母，描述我们地球的环�…