Chuyển câu trực tiếp sang câu gián tiếp

1 -jenifer is the most intelligent in my class 

>nobody 

2-mary said , '' I don't know what fred is doing 

>mary said

3-they have built a new bridge across the river 

>A new bridge

4-this is the first time jane has visited VN

>Jane hasn't 

5-hung /like/make/things/hands 

6-this skyscraper / one /tall / buildings / world

7-father / suggest / we / study / harder / final exams

8-it rainning / hard / but / we / go / mary is birthday party / time