Walking stick.This stick____________________ by a strange FORGET visitor the day before. The words "To Dr Mortimer"_______________ WRITE on it. Dr Watson had already been examining it for half an hour but he_______________________ say anything about it. NOT CAN Suddenly Sherlock Holmes The owner of this stick has a dog which is larger than a terrier. I have noticed the marks of a dog's teeth on the stick.' SAY Probably the dog often_______ CARRY the stick behind the master,' he added. 'I wonder why this man wanted to visit us,' asked Dr Watson. 'Well, we soon_________________ ,' answered Sherlock Holmes. 'I can hear the bell ringing.' KNOW"