几道英语选择题,需要具体解释原因

几道英语选择题,需要具体解释原因
1.Her voice sounds_____ and I feel _____ that there must be something wrong with her.
A.strange,surely B.strangely,surely C.strangely,sure D.strange,sure
2.It is _____ diffciult question to answer if not ____ difficult.
A.the most ,a most B.a most,the most C.the most,the most D.a more ,a most
3.There is a house with a door ____ and all the windows_____.
A.open,closed B.opening ,closed C.open,close D.opening ,close
4.The girl lay___ on the ground thinking about something good.
A.quite B.quiet C.quitely D.quietly
D B A B