1、I hate ____when people talk with their mouth full

1、I hate ____when people talk with their mouth full
A it B that C these D them
为什么不可以选B）
2、If I had _______,I'd visit Europe,stopping at all the small interesting places
A a long enough holiday
B an enough long holiday
.
为什么不选B）
3、When can I come for the photos?I need them tomorrow afternoon.
They _____be ready by 12:00
A can
B should
C might
D need
忘了说下
第3题答案为B
为什么不选A