Jack could driving when he was fifteen(同义句）

Jack could driving when he was fifteen(同义句）
1.Jack could drive when he was fifteen.（同义句）
Jack could drive _______ ________ ________ _________ fifiteen.2.We can talk loudly in the classroom.（否定句）
We _______ ________ loudly in the classroom.
3.You must read some books after school.（变一般疑问句,并作出否定回答） ________ I ________ ________ books after school?__________,you ___________.
4.We must tell him the news.(对划线部分提问） _________ _________ we tell him?
5.Remember to come here at half past eight.（同义句）
_________ _________ to come here at half pas eight.