a cool rain was falling,mixed with snow
为什么用mixed 雨难道是被混合吗被谁混合啊
为什么不用mixing
2 if law-breaker went unpunnished, the society will be in disorder
为什么用went 不用made 或者came
3. in order not to be disturbed, i spent three hours locked in my study
为什么用locked啊
他还有的选择是locking ,to lock, being locked
4if you go to xi'an, you will find palaces there more magnificent than commonly supposed
为什么用supposed这里的主语不是you 吗应该是主动啊