5道英语题目 说明理由

5道英语题目 说明理由
1.The scientists found it was not possible to fly in the 18th century.(保持句意不变)
The scientists found ________ ________ to fly in the 18th century.
2.The boy came to the world in 1970.(保持句意不变)
The boy ________ ________ in 1970.
3.You can't pass the exam.You don't work hard.(保持句意不变)
If you don't work hard,you won't _______ _______ to pass the exam.
4.How do you like the paino playing?(保持句意不变)
What _______ you _______ _______ the paino playing?
5.This pair of glasses isn't mine.(保持句意不变)
This pair of glasses ________ ________ ________ me.