句型转换【只有一题】The youngest child is supposed （to start eating first）（对括号部分提问）____ ____ the youngest child _____ _____ ______ first?
问题描述：
句型转换【只有一题】
The youngest child is supposed （to start eating first）（对括号部分提问）
____ ____ the youngest child _____ _____ ______ first?
答
What is supposed to do
答
对事提问用What
所以
what is ；supposed to do