OG第29题 不明白OG解释……

29，in three centries---from 1050 to 1350---several million tons of stone were quarried in France for the building of 80 cathedrals , five hundred large churches, and some tens of throusands of parish churches.

A for the building of 80 cathedrals, 500 large churches, and some

B in order that they might build 80 cathedrals, 500 large churches, and some

C so far they might build 80 cathedrals, 500 large churches, and some

D so that there could be built 80 cathedrals, 500 large churches, and

E such that they could build 80 cathedrals, 500 large churches, and

OG的解释上说，....the pronoun they, which appears in BCE, has no grammatical reference...

是什么意思呢，我理解的是指代不明，可是我觉得明明指代就明白，就是STONE吧…………

拜托大家答疑谢谢了………………

嗯，的确…………………………为什么我发现不了！！～～～～？？？

多多练题就能培养出敏感性吗？？

谢过了…………