Mrs. Le explained that the burning of coal led to air pollution., Nam said he had to present his paper on endangered animals the following week., Linda asked the speaker if human activities have an impact on the environment., Nam asked Mai what environmental projects her school was working on., Tom said to Nam that he would read more articles before writing the essay.

Task 1

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?