air quality in urban areas from one to five:excellent, fairly good, slightly polluted, poor, and dangerous

The old man enjoyed the fresh air and admired the beautiful surroundings________, he lived a happy life.[ ]

nager was worried about the press conference his assistant _____in his place but ,luckily ,everything was going on smoothly.

I’m afraid these flowers won’t be able to live through the winter.—But I think otherwiseYou see， measures to take good care of them

win the competition,heis likely to get into the national team.