They spend a lot of time____(visit)the Palace Museum.

来源:学生作业帮助网 编辑:作业帮 时间:2022/08/11 17:15:25

They spend a lot of time____(visit)the Palace Museum.

visiting

visiting
spend doing
祝你学习进步

visiting spend ...doing 花。。。去做某事

spend……on doing花……在做什么上面
答案是:on visiting