—Is Pro.Smith giving the speech today?—It__________ be him. He is abroad right now.
What is the way George thought of _________ enough money to buy the house?
---I’ll be away in a few days. Would you mind looking after my dog? ---Not at all. _________
His eyes suddenly widened. I knew a good idea must have _________ to him.
The World War II made_________ impossible for Einstein to go on with his research.
We had _________ great fun at the charity party yesterday. I have never had _________ more exciting experience.