1 . The Amazon rainforest _______(breath) life into the planet by fixing carbon and producing over 20 per cent of all the Earth’s oxygen. (所给词的适当形式填空)

2 . 李黛予和表妹来到多伦多这个加拿大最大、最富有的城市后，离出发到下一站蒙特利尔之前只有几个小时的时间，她们就在多伦多逛了逛。
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 ________________ the next leg of their trip to Montreal, so they went on a tour of the city.