英语定语、宾语、状语从句Do you think ( )an English film tonightA.is ther

英语定语、宾语、状语从句
Do you think ( )an English film tonight
A.is there
B.there is going to be
C.will there be
D.there is going to have
这里B和D选项有什么区别?
I hate( )when people talk with their mouths full.
A.it B.that C.there D.them
it和that的区别是什么?
To use the Internet, all ( )you need is a computer and telephone line.
A.which B.what C.that D.who
这道题不是选A吗?怎么背后的答案是C的?