问题
选择题
I'm not sure ______ Miss Green will come to join us tomorrow.
[ ]
A. hat
B. what
C. why
D. whether
答案
答案：D
搜题请搜索小程序“爱下问搜题”
I'm not sure ______ Miss Green will come to join us tomorrow.
[ ]
A. hat
B. what
C. why
D. whether
答案：D