挑错题(there) was （too） much dust that we （couldn't） see (what）was h_英语解答

挑错题(there) was （too） much dust that we （couldn't） see (what）was happening.
(there) was （too） much dust that we （couldn't） see (what）was
A B C D
happening.
我觉得这句话没错,可是答案是b,请问b错在哪了?

人气：448 ℃　时间：2020-03-22 20:16:06

解答

应该是too...to结构的句子吧.
too much dust to see
so much dust that can't see.