[求助]XDF CD

vittel2046

The Olympic Games Helped to keep peace among the pugnacious states of the Greek world in that a sacred truce was proclaimed during the festival’s month.

a.
b.x
c.world when they proclaimed a sacred truce for the festivl month.
d.world, for a sacred truce was proclaimed during the month of the festival
e.x

answer is ‘c’

1- why ‘d’ and ‘a’ are wrong?
2- I think 'they' in 'c' can vaguely represent 'states of Greek'

Thanks!

Herbert

主动被动成为这题的取舍标准。
只有一个代词THEY， 指代不能说模糊。

tocean0222

1、"in that" and "for" ,respectively, in A and D mean "because", so they cannot be used here to link two clauses logically where "when" is required.And here the intiative form is preferable to the  passive one.
2、agree;