________pleasant it is to travel by air!_____________

问题描述:

________pleasant it is to travel by air!_____________
A How ,so is it B how,so it is C what ,so is it D what,so it is哪一个解释说明

B
感叹词pleasant 是形容词,感叹句自然用how引导
so it is.确实如此,表示赞同
so is it.它也是.