Go and get your coat. It’s ________ you left it.
We _______on our project day and night in the past two weeks.
It is important to know about the cultural differences thatcause problems.
Ernest visited the South Pole because he wanted to see one of the _______regions in the world.
It is said that two man-made structures are clearly visible from space. One is the Great Wall of China, andis Japan's Kansai International Airport.
We’re planning to send out a thousand invitations_______Expovolunteers.