how long( ) the students in class 1( )every night?(sleep) those ( )need lots of energy ( )dance

问题描述:

how long( ) the students in class 1( )every night?(sleep) those ( )need lots of energy ( )dance
第二题是这样的
those()need lots of energy ( )。(dance)

how long【do】 the students in class 1【sleep】every night?
一班的学生们每晚睡多长时间?
those 【dancers】 need lots of energy 【to dance】
那些舞蹈演员需要很多的能量来跳舞 舞蹈演员跳舞要耗费很多的能量