--- What do you think of this novel?

--- Er … sorry. I _____. What did you say?

A．didn’t listen

B．hadn’t listened

C．haven’t listened

D．wasn’t listening

--- 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．if I would go by train or by plane

D．who should I travel with