Thesmallmountainvillagewas（）bythesnowformorethanonemonth.
Toobtainasatisfactoryresult，onemustapplytwo____ofpaintonacleansurface.
Duetothebadweathertheplanewas____fortwohours.
Oneoftherequirementsforafireisthatthematerial____toitsburningtemperature.
Howlonghaveyou____?
