They found there wasn't anyone at the entrance so they [ ] proof _英语解答

They found there wasn't anyone at the entrance so they [ ] proof of their ages .
A,didn't need to show B,needn't have shown C,couldn't show D,musn't shown

人气：479 ℃　时间：2020-09-30 05:54:48

解答

They found there wasn't anyone at the entrance so they [ needn't have shown ] proof of their ages.这里要选B. 意思是：没有必要做……整句话的意思是：他们发现入口处根本就没有人,因此他们就没有必要出示年...