1. They will finish building the house in two weeks. (对画线部分提问)
     ______________________________ they finish building the house?
2. Hurry up, or you'll miss the early train. (改为if 引导的条件状语从句) 
    If you ______________________________, you'll miss the early train.
3. Jack is too young to dress himself. (改为复合句) 
    Jack is __________ young __________ he can't dress himself.
4. She has already finished reading the novel. (改为否定句) 
    She _______ finished reading the novel ____________.
5. Why didn't he pass the exam? I want to know …(改为含宾语的复合句) 
    I want to know _____________ he didn't __________ the exam.