All animals in nature must learn to        to a changing environment in order to survive.

----Did you look up the time of the high-speed trains to Shanghai?----Yes, the early train is __________ to leave at 5:30 a.m.

With the word "PM2.5"______ heard and seen in our life, people become more and more concerned about air pollution.

________，everybody agrees the suggestion that the prize should be sent out to the hero by mayor.

My interests include football, bowling and surfing the web_____ studying my favorite subjects.