24.As we all know, newspapers, magazines and radios as well as television broadcasts can keep us ____about what is happening at home and abroad.
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?