问题
I think it’s going to be an argument.（争论）—Yes, it could be.—I wonder ______we can do .
A:what
B:how
C:when
D:whether
B:how
C:when
D:whether
正确答案是：
同类题型
I don’t like talking on _______ telephone; I prefer writing _______ letters.
______, we arrived too late to catch the plane.
She looks very sad. I want to help her, but I just don’t know ____ to do it.
did he sneeze?－For about 3 hours.[ ]
What’s your favorite TV show? ——_______favorite TV show is I am a singer.