一般将来时be going to表达旅行计划 — 英语填空题
题目
下个月，Anna 要和父母去泰晤士河边旅行。请根据句意用 be going to 结构的正确形式填空（每空一词）：Anna and her parents ___ ___ ___ ___ (take) a trip to the Thames next month. She ___ ___ ___ ___ (not travel) by plane; instead, they ___ ___ ___ ___ (go) there by train because it is cheaper.