The boy said that he wanted to be a computer scientist (科学家) when he __________.
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Today young people from different countries can easily __________ one another through email, WeChat, Facebook, etc.
Mark wanted to finish his homework in two hours, but it __________ to be harder than he thought.
Tom fell and broke his leg. __________, he would have to be away from school for a month or two.
A new school has been __________ there.