2 . After Li Daiyu and her cousin arrived in Toronto, the largest and wealthiest city in Canada, they only had a few hours to kill before they had to proceed to the next leg of their trip to Montreal, so they went on a tour of the city. （英译汉）
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3 . These bad habits, if left unchecked, could lead to more serious ones when they become adults. （英译汉）
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4 . 只有学会和大自然和谐共处，我们才不会成为野生生物和地球的威胁。
_________ we learn to _________ wildlife and to our planet.

5 . 当你身处逆境时，你会遇到面临相似挑战的人。(汉译英)

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6 . There comes a time when the old must give way to the new, and it is not possible to preserve everything from our past as we move towards the future. (英译汉)

7 . Your lights will come out the instant you enter the door.(英译汉)

8 . In time, he rose to become a famous doctor, and even attended to Queen Victoria when she gave birth. (英译汉)