They visit theur teacher once a year.(They划线提问）

They visit theur teacher once a year.(They划线提问） 1.They visit their grandparents once a week.（划线提问) They move their homes once a year.划线提问,划once a year. （对划线部分提问) They go to the seaside once a year.（划线部分 once a ye They go to the park once a year (用once a year 提问) They will graduate from middle school in half a year（划线提问）（划 They go on school tirps three times a year.（对划线部分提问） They have a test once a week[就划线部分提问】划线部分我忘记了, they have been to the summer palace only once（only once划线提问） They are going to build a new house next year.year划线提问 对括号部分提问：They go to London (once a year). 划线提问They will visit Yu Garden next saturday.