有关英语的2道题.
问题描述：
有关英语的2道题.
1、It was discovered （that they were endangered） in 1972.（对括了括号的部分提问）
_____ _____ _____ in 1972?
2、There used to be a lot of manatees.（改为否定句）
There _____ _____ to be a lot of manatees.
答
1 what was discovered
2 didn't use