In my point of view, the question is not _____ the world is going to have a new economic crisis, but when.
China is a peace-loving country and _____no circumstances _____ first use nuclear weapons.
In the past decades, sea ice _____in the Arctic as a result of global warming.
In our country the cold weather in the north_____ sharply _____the hot weather in the south.
_____of danger in the street at night, she had to go home, with a friend_____ her.
I don't doubt _____ he will pass the exam.