---Was Mary in the reading room when you arrived there?---Yes,but she _____ soon afterwards.
I didn’t do very well in the exam, and so I’m afraid of ___.
It is very cold in the northeast of China ___ winter.
John lives ___ No. 104 Nanjing Road.
Steve and Jane are both very good ___ chemistry.
Do you often help your father ___ the farm work during the summer vacation?