问题

How soon will you start your journey? —I’m not sure. I haven’t decided_____.
A:when shall I ask the boss for leave
B:where I will go to spend the holiday
C:whether I would go by train or by plane
D:who could invite me to go
B:where I will go to spend the holiday
C:whether I would go by train or by plane
D:who could invite me to go
正确答案是: