问题
选择题
When it comes to job interview, you really don't know ________ you performed until you get the
goodnews call. [ ]
A. how
B. why
C. where
D. when
答案
答案：A
搜题请搜索小程序“爱下问搜题”
When it comes to job interview, you really don't know ________ you performed until you get the
goodnews call. [ ]
A. how
B. why
C. where
D. when
答案：A
，试求A、B、C三处的约束力（要求方程数目最小而且不需解联立方程）。