中学英语,语法好的请进.

中学英语,语法好的请进.
1.On Friday afternoon we were getting ready to go to the pictures when the baby-sitter rang (81) (say) that she would come at 6:30 instead of 6 pm.So when we got to the cinema the film (82)__had started (start) already.We (83)were led_ (lead) to our seats by the usher in the dark.We (84)had watched_ (watch) the film for about half an hour when something (85)__hit(hit) me on the head.A little boy who (86)sat (sit) two rows behind me said,“I am sorry,madam.I (87)did(do) it by accident.I (88)threw_ (throw) an ice cream to the boy who (89)__is sitting(sit) in front of you.I thought he (90)_would catch__ (catch) it.”
第81题答案为什么是to said?
2.In the sentence there is a word of four letters hidden between words that are next to each other.Find this four letter word.
Example:Scientific paper books.sand
The winter ice covers the pond._________
请简明地讲一下思路啊
3.B35.________ the wrong number,she couldn't get in touch with her friend Lisa.
A.Being received B.Having been given
C.While receiving D.When having given
为什么是B而不是C?
4.D41.Young children are completely ________ the mother for their physical needs and for their early education and training.
A.relied on B.independent of C.depending on D.dependent on
四个选项有什么区别?