格林一家正考虑去泰山旅游 The Greens ____ _____ ____ _____ to Mount Tai for a trip
问题描述：
格林一家正考虑去泰山旅游 The Greens ____ _____ ____ _____ to Mount Tai for a trip
答
are thinking about going ,about 是介词,在介词后出现动词后要用ing 形式.