76. All flights _______ called off because of the terrible weather, they had to go there by train.
I’m glad to say that he’s already finished ________ 50% of the book in these three days.
All possible means _______. However, nothing can _______ him dying of lung cancer.
Do you think ________ life on Mars?
At the ________ news, there was a ________ expression on his face.
We were scared to death when the fire ________. Fortunately, it was put out before it caused much damage.