I met my teacher _____ I was walking in the street, but I didn’t say hello to him.
Do you know the name of the boy _______ father is a doctor?
It was snowing hard_______we had to stay at home and watch TV.
________ is waiting for you over there. He wants to say thanks to you.
Heilongjiang is in the_______of China.
Where is my jacket? Could you help _______ find it, dear?