6、onandprotecttheenvironment.Thedishesherearewellcookedandfreecakesareprovided.Be sure to pay attention to protecting the environment and think of others while traveling.我们现在所居住的城市过去曾经是一个小村庄。(used)装满衣物和药品的飞机昨晚到达灾区。(load)使我感到惊讶的是,六十年前生产的机器还在这家工厂里使用。(inuse)Thecityusedtobeasmallvillage.Theplanear