正确答案是D.
how much除了被用来问钱问不可数名词的数量外,还可以被用来问程度!
如:How much is this book?
How much water is there in the cup?
请看这个例子:
I love her very much.
如果问你有多么爱她的时候,应该说:
How much do you love her?
同理,本题也是表达"我是多么地想再次看到你",所以说:
how much I want to see you again.
本句因为是宾语从句,所以没有倒装,用了陈述句序.