The children are planting trees a（round ） the lake
分析：around 在……周围
翻译：孩子们正在湖的周围种树.
加油!不明白再问!How can I get to Class One,Grade Two?--Go s____ahead.It's next to the school library.You're very kind to help me with my work.(改为同义句）_____ very kind_______you to help me with my work.1 straight即：Go s(traight） ahead.It's next to the school library.朝前直直走。它靠近学校图书馆 2 It's ,of即 （It's ）very kind(of )you to help me with my work.你真好帮我做工作。