英语,最好解释下为什么不选其他的.1.We_______of the decision until 8:00 yeste

英语,
最好解释下为什么不选其他的.
1.We_______of the decision until 8:00 yesterday.
A.got informed B.didn't inform C.werenit informed D.were informed
2._____________with others you leave us a deeper impression.
Poets often compare life_______river.
A.Comparing;to B.Compared;with C.Compared;to D.Comparing;with
3.He is one of those people ________everybody will find_______hard to please.
A.that;being B.whom;/ C.who;is D.which;to be
4._______his arrivel at the airport,he called his parents.
A.While B.When C.As D.Upon
5.Which of the two cows______you keep produces more milk?
A.which B.what C./ D.do