Was it near the white building,if i may ask ,___martin luther King gave a speech?填什么?为什么选that 而不用where?

Was it near the white building,if i may ask ,___martin luther King gave a speech?填什么?为什么选that 而不用where?
Was it near the white building,if i may ask ,___martin luther King gave a speech?填什么?
为什么选that 而不用where?

Was it near the white building,if i may ask ,___martin luther King gave a speech?填什么?为什么选that 而不用where?
Was it near the white building,if i may ask,that martin luther King gave a speech?
Was it near the white building that martin luther King gave a speech?
It was near the white building that martin luther King gave a speech?
强调句 所以只能用that

这是强调句的一般疑问形式

这是个强调句啦
中间的“if I may ask”只是个插入语而已
你只看前后两部分，其实是个强调句的疑问句语序~