How 什么 he going to France next week?

be going to 是一般将来时的结构。
因为跟he搭配的be动词是is、
所以这一题用is。
How is he going to France next week.

How is he going to France next week?
这里be going to do 表示将来的情况，将要做什么。这句是说“他下星期怎么去法国？”所以用is.

is