One summer night in 1990, a reporter appeared at the door of Thomas Edison’s laboratory, _____ for an interview.
The time is not far away ________modern communications will become widespread in China’s vast countryside.
____ about wild plants that they decided to make a trip to the mountain.
----What have you been ____ these days? ----Preparing for my daughter’s wedding party.
At a rough estimate, Nigeria is ____ Great Britain.
It was five o'clock in the afternoon ____they arrived at the hotel.