问题
选择题
Good food, good sleep, no exercise. That's ________ he gained weight.
A．how
B．when
C．what
D．whether
答案
答案：A
A 空格后面是表语从句，引导遇见强调的是方式，故使用how引导。
搜题请搜索小程序“爱下问搜题”
Good food, good sleep, no exercise. That's ________ he gained weight.
A．how
B．when
C．what
D．whether
答案：A
A 空格后面是表语从句，引导遇见强调的是方式，故使用how引导。