根据所给答句，选择合适的疑问词写在横线上。5%
     
（1）—________are you going to do？    
—I'm going to go shopping.
（2）—________are you going?         
—I'm going to the book store.
（3）—________are you going?             
—This morning.
（4）—________do you go to the market?     
—By car.
（5）—________book is this?               
—It's Amy’s.