请高手答疑解惑

1.        Although the manager agreed to a more flexible work schedule, he said that it must be posted on the bulletin board so that both management and labor will know what everyone is assigned to do.

(A) he said that it must be posted on the bulletin board so that both management and labor will know what everyone is

(B) he said it had to be posted on the bulletin board so that both management and labor knows what everyone is

(C) he said that they would have to post the assignments on the bulletin board so that management and labor knew what everyone was

(D) he said that the schedule would have to be posted on the bulletin board so that both management and labor would know what everyone was（A）

(E) saying that the schedule had to be posted on the bulletin board so that both management and labor would know what everyone had been

I think that D is better ,but the answer is  A,

What everyone is is not parallel with the he said…

2.        Archaeologists in Ireland believe that a recently discovered chalice, which dates from the eighth century, was probably buried to keep from being stolen by invaders.

(A) to keep from

(B) to keep it from

(C) to avoid

(D) in order that it would avoid（B）

(E) in order to keep from

Why the answer is B?? I think C may be better

D的逻辑错误很严重，have to是指人主观不得不做什么事情，schedual是不会have to的

同样avoid也是，是主观的词，Gmat中keep from优于avoid，在这里chalice也不能主动去avoid什么东西

BTW，不是高手