They saw a Beijing opear last week.对last week提问 ___ __ __ they____英语解答

They saw a Beijing opear last week.对last week提问 ___ __ __ they___a Beijing opear?

人气：200 ℃　时间：2020-01-26 02:47:43

解答

What time did they see a Beijing opera?
如果前面是两个空的话,就是
When did they see a Beijing opera?
不知是否明白了\(^o^)/~