---Why do you come back so late? ---Because there were too many people in the supermarket, and I had to _____to pay for the things.
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?
Jane is ill in_______hospital and Mary’s mother happens to work in ______hospital.