填：at.at the gate固定用法.
补充的：they searched the internet _to find (find) a job
she is sure_to finish(finish)the task on time.
his house _faces ( face)the sea.it's three and a half hours ()trainby。the emperors chose an area northwest of beijing( )their翻译句子 为了节约钱，孩子们将坐自行车旅行。谢谢。没有了，你好，可翻译为：Children will travel on their bicycles in order to save money.the emperors chose an area northwest of beijing( )their，这个你是否缺少什么呢