This is a talk by a London taxi driver.I"ve been a taxi driver for 1 ten years. 2 London taxi drivers have their own taxis. It"s a nice 3 most of time. You meet a lot of people. I always work at night, 4 there is too much 5 during the day. I live twenty miles outside London and I go to work at 5:30 in the afternoon.I usually go home between 2 and 3 in the morning. Some very 6 things happened late at night. 7 I was taking a woman home from a party. She had her little dog with her. 8 we got to her house, she found that she had lost her 9 . So I waited in the car with the dog while she climbed in 10 the window.I waited and waited. After half an hour of ringing the bell I decided to 11 what was going on. I tied the dog to a tree and started to climb in through the window. The next thing I knew was 12 the police came. They thought I was a thief.13 the woman came downstairs. She must 14 sleep and forgotten about me and the 15 ! （12）处填入（）

A. that
B. for
C. when
D. how