Mum is coming,what presant____for your birthday?

Mum is coming,what presant____for your birthday?
A you expect she has got
B you expect has she got
C do you expect she has got
D do you expect has she got
正确答案是C,谁能解释下D为什么不对,我们老师讲了这个题后又举了个例子：
what do you think will he do with the problem?为什么这里will he do with又用疑问语序呢,